What is *Chasing the Sun* by Linda Geddes about?

*Chasing the Sun* explores the profound impact of sunlight on human health, delving into circadian rhythms, mental well-being, and the consequences of modern indoor lifestyles. Linda Geddes combines cutting-edge research on topics like social jet lag, shift work risks, and ancestral light exposure with relatable examples, such as the Amish community’s natural-light-centric lifestyle.

Who should read *Chasing the Sun*?

This book is ideal for health enthusiasts, science readers, and anyone curious about how light shapes biology. It appeals to night owls, shift workers, and individuals dealing with mood disorders or sleep issues, offering actionable insights to harmonize daily routines with natural light cycles.

Is *Chasing the Sun* worth reading?

Yes—Geddes’ accessible writing translates complex science into engaging narratives, backed by rigorous research. Readers gain practical advice, like optimizing light exposure for better sleep, while learning about underestimated topics such as sunlight’s role in immune function and seasonal depression.

How does sunlight regulate our circadian rhythm?

Sunlight cues the body’s internal clock by suppressing melatonin in the morning and triggering its release at night. Disruption from artificial light or irregular schedules can lead to “social jet lag,” metabolic issues, and mood disorders, as detailed in studies on shift workers and modern office environments.

What are the health risks of night-shift work according to *Chasing the Sun*?

Shift work is linked to inflammation, higher cancer risk, and metabolic dysfunction due to misaligned circadian rhythms. Geddes highlights its classification as a “probable carcinogen” and contrasts this with the Amish, whose outdoor lifestyles correlate with lower depression rates.

How does *Chasing the Sun* use the Amish community as an example?

The Amish, who spend ample time outdoors, exemplify the benefits of natural light synchronization. Their lower depression rates and balanced sleep patterns contrast starkly with the health struggles of those exposed to artificial light at night, underscoring sunlight’s biological necessity.

What actionable tips does Geddes provide for reconnecting with sunlight?

Key advice includes morning sunlight exposure, reducing evening screen time, and using bright daylight-mimicking bulbs. These steps help reset circadian rhythms, improve sleep quality, and enhance overall well-being by aligning modern habits with evolutionary needs.

What is “social jet lag” in *Chasing the Sun*?

Social jet lag refers to the mismatch between innate circadian rhythms and societal schedules, often affecting night owls forced into early routines. Geddes explains how this misalignment heightens risks for obesity, diabetes, and mental health issues.

追逐太阳

阳光的新科学：它如何塑造我们的身体与思想

琳达·格德斯

4(1556 Reviews)

《追逐太阳》概述

在《追逐太阳》（Chasing the Sun）中，探索阳光是如何在暗中编程你的身心。这本书被《每日邮报》誉为“改变生活”之作，这场启发性的旅程揭示了为什么现代室内生活方式可能正在扼杀我们的健康。如果办公室的照明对健康的破坏程度甚至超过了垃圾食品，该怎么办？

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第 1 章

The Sun's Rhythm: A Dance of Light and Life

Have you ever noticed how you feel more energized on a sunny day? Or how your mood seems to plummet during dark winter months? This isn't just psychological-it's deeply biological. Linda Geddes' "Chasing the Sun" reveals the profound relationship between sunlight and human health that modern society has largely forgotten. The book has garnered praise from leading chronobiologists and sleep researchers, with Dr. Matthew Walker (author of "Why We Sleep") calling it "a fascinating and deeply researched exploration of humanity's complex relationship with our most essential star." As climate change alters seasonal patterns and technology increasingly separates us from natural light cycles, understanding this relationship has never been more crucial. From ancient sun-worshipping civilizations to cutting-edge chronobiology research, Geddes shows us that our bodies are quite literally programmed by the sun-and ignoring this connection comes at our peril.

第 2 章

Our Bodies Run on Solar Time

Step outside into the Mojave Desert at midday, and you'll immediately understand the sun's raw power. Temperatures soar to 49C, stripping away body fluids from unprepared travelers. Desert creatures have evolved remarkable adaptations-Joshua trees with water-conserving spikes, jackrabbits with heat-dissipating ears, animals that become nocturnal or estivate underground. Humans, despite our technological shields, remain fundamentally vulnerable to this celestial force. Our relationship with the sun isn't merely about survival-it's encoded in our very biology. Life itself emerged from Earth's special relationship with our star. Early cyanobacteria transformed sunlight into chemical energy through photosynthesis, producing oxygen and making our atmosphere hospitable. We humans assimilate starlight through our food, while the sun's rays penetrating our eyes regulate our internal sense of time. This internal timekeeping system-our circadian rhythm-controls virtually every aspect of our physiology. From kidney function to immune response, cognitive performance to hormone production, our bodies operate differently during day versus night. These rhythms aren't merely reactions to light and dark; they're generated by an internal master clock in our brain's suprachiasmatic nucleus, which synchronizes with sunlight through specialized cells in our eyes. What's fascinating is that these circadian variations aren't uniform across populations. Research with the Hadza hunter-gatherers revealed something surprising: even in small communities, there were almost never times when everyone slept simultaneously. This natural diversity in sleep timing created near-constant vigilance without anyone specifically assigned as a night watchman-what anthropologist David Samson calls the "poorly sleeping grandparent hypothesis." This suggests that people with extreme chronotypes-early birds who naturally wake at dawn or night owls who thrive after dark-aren't abnormal at all. In ancestral communities, these sleep pattern variations may have made them particularly valuable members of their social groups, contributing to collective safety through their natural vigilance during different parts of the night.

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第 3 章

When Artificial Light Changed Everything

The Amish family of Hanna and Ben King offers a glimpse into life with minimal artificial light. Though they have modern comforts like running water and comfortable beds, their Old Order Amish principles forbid connection to the electric grid. After sunset, they rely on a single propane gaslight and occasionally battery-powered LED lanterns, making their home far darker than typical American households. The Amish also spend considerably more time outdoors-maintaining a more direct relationship with natural light cycles than their "English" contemporaries. Before the 1800s, humanity lived in sync with the sun's rhythm. People relied on dim tallow candles or whale-oil lamps, which were expensive and used sparingly. Workers developed creative solutions like surrounding candles with water globes to magnify light or even carrying buckets of bioluminescent rotting fish into mines. These weak light sources made precision work difficult, especially in winter, and posed constant fire hazards. Everything changed with gaslight in the early 19th century, followed by Edison's incandescent bulb in 1879. Suddenly, night became optional. The term "nightlife" emerged in 1852 as illuminated cities enabled evening entertainment, shopping, and safer streets. Robert Louis Stevenson celebrated these "biddable, domesticated stars" that freed city dwellers from nature's darkness. In the 140 years since, artificial lighting has expanded relentlessly, increasing globally by over 2% annually. This brightness comes at a cost-two-thirds of Europeans and 80% of Americans can no longer see the Milky Way from home. From the International Space Station, astronauts photograph Earth's nighttime light show-orange sodium vapor lights, blue-green mercury lights, and whitish-blue LED networks spreading across continents. This scattered light disrupts wildlife by confusing insects' lifecycles, birds' migration patterns, trees' leaf retention, and even plant pollination. Humans aren't immune either-people in light-polluted areas go to bed later, wake later, sleep less, feel more tired, and report lower sleep quality. While some like Donald Trump boast about minimal sleep, scientists increasingly recognize sleep as fundamental to learning, problem-solving, emotional regulation, and social intelligence. Our 90-minute sleep cycles, alternating between non-REM and REM phases, serve distinct purposes: NREM sleep appears to prune unnecessary neural connections while REM sleep strengthens important ones. Studies of the Amish reveal striking differences in light exposure compared to modern Western populations. The average evening illuminance in Amish homes is around 10 lux-three to five times lower than electrified homes. More significantly, Amish people experience much higher daytime light exposure (4,000 lux in summer compared to Britain's 587 lux), creating a stronger contrast between day and night that helps maintain robust circadian rhythms. Most Westerners spend 90% of time indoors under office lighting (100-300 lux)-effectively living in perpetual twilight compared to even the gloomiest overcast day outside (at least 3,000 lux).

第 4 章

The Dangerous Reality of Shift Work

Thomas Edison's assertion that "Everything which decreases the sum total of man's sleep, increases the sum total of man's capabilities" has proven dangerously wrong. While artificial light enables 24/7 productivity, chronic sleep deprivation can be deadly. Sleep-related accidents account for 20% of British road crashes, with higher fatality rates than other accident types. Just 19 hours without sleep impairs attention equivalent to being legally drunk, and driving on 4-5 hours of sleep quadruples crash risk compared to getting the recommended seven hours. Sleep deprivation affects virtually every physiological process: emotional stability, memory, reaction speed, hand-eye coordination, logical reasoning, and vigilance all deteriorate. Chronic sleep deficiency precedes Alzheimer's disease, cancer, and psychiatric illnesses, while also being linked to heart disease, obesity, diabetes, and reduced fertility. Recent research shows that sleeping irregularly is even more harmful than simple sleep deprivation. Men who slept five hours at irregular times showed double the reduction in insulin sensitivity and increase in inflammation compared to those sleeping the same amount at consistent times. This "social jet lag" affects 87% of people, with 69% experiencing at least an hour weekly. Each hour increases cardiovascular disease risk by 11%, worsens mood, increases tiredness, and boosts odds of obesity by a third. Submariners exemplify extreme circadian disruption, living for months without sunlight in cramped quarters with 18-hour "days" instead of 24-hour cycles. Captain Seth Burton survived on just four hours of sleep daily for fifteen years, developing aggressive cancer at age twenty-seven that he attributes to this schedule. Studies confirm that 15-30% of workers engage in shift work, with night workers showing poor circadian adaptation. Their body clocks, which adjust only 1-2 hours per day, cannot keep pace with rotating shifts, causing desynchronization between organs that disrupts metabolism and increases risks of diabetes, heart disease, depression, brain shrinkage, and cancer. Nutrition researcher Gerda Pot discovered that irregular eating patterns increase metabolic syndrome risk, even when consuming fewer calories overall. Meal timing proves equally important. Overweight women on identical-calorie diets lost 2.5 times more weight when consuming most calories at breakfast rather than dinner. This isn't simply about having less time to burn evening calories-our metabolic processes vary throughout the day. Insulin sensitivity decreases at night, potentially raising blood glucose levels from evening meals and increasing diabetes risk. Major industrial disasters often occur at night-Chernobyl (1:30 a.m.), Three Mile Island (4 a.m.), and the Exxon Valdez oil spill (midnight) all involved errors by night-shift workers attributed partly to sleepiness. Our alertness reaches its lowest point in early morning, coinciding with our temperature minimum, and deteriorates further after extended wakefulness-problematic when shift workers sometimes go 20+ hours without sleep.

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第 5 章

Sunlight as Medicine: Ancient Wisdom Validated

Niels Ryberg Finsen pioneered light therapy in the late 19th century, developing treatments for skin tuberculosis (Lupus vulgaris) that earned him the 1903 Nobel Prize. Growing up in the sun-starved Faroe Islands and later suffering from Pick's disease himself, Finsen became convinced of sunlight's healing properties after noticing his own health improved with sun exposure. Building on earlier work showing sunlight could kill bacteria, Finsen created specialized lenses and eventually the "Finsen Light"-an apparatus that filtered, compressed and cooled rays from carbon arc lamps to treat patients. His Medical Light Institute achieved remarkable success: 83% of 804 patients treated between 1896-1901 were cured of skin tuberculosis. This work coincided with growing recognition of sunlight's importance in preventing rickets, which had become widespread in industrializing cities where smog and cramped living conditions limited sun exposure. English missionary Theobald Palm first connected rickets to sunlight deficiency in the 1880s after noting its absence in sunny countries, leading to "sunbaths" becoming standard medical treatments for various conditions over the next forty years. By the 1920s, sunlight was hailed as a universal remedy. Victor Dane's 1929 book claimed the sun could heal virtually every disease. However, skepticism emerged-a 1923 Lancet paper noted disappointing results for tuberculosis of the lungs, with unsupervised sunbaths sometimes worsening symptoms. By 1947, surgeon John Lockhart-Mummery dismissed sunlight therapy as "pseudo-magic." The discovery of antibiotics and widespread cod liver oil use eventually diminished sunlight therapy's popularity. Modern science has validated many aspects of these earlier observations. Vitamin D, produced when skin absorbs UVB rays, activates the immune system's defenses against bacterial invaders by triggering antimicrobial peptides like cathelicidin. Vitamin D receptors appear throughout the body-in the heart, pancreatic insulin-producing cells, and brain tissue. It helps immune cells fight invaders, promotes wound healing, and develops regulatory immune cells that prevent autoimmune reactions. Despite abundant sunshine in some regions, vitamin D deficiency remains common. At latitudes above 37 (including most of Europe and northern US), winter vitamin D synthesis becomes negligible, making us dependent on summer reserves and dietary sources like oily fish and egg yolks. The UK's Scientific Advisory Committee on Nutrition now recommends supplements during winter months to protect bone health, particularly for elderly people vulnerable to falls and fractures.

第 6 章

Beyond Vitamin D: The Sun's Hidden Health Effects

Vitamin D supplements may not capture all of sunlight's health benefits. While vitamin D levels indicate sun exposure, popping pills isn't equivalent to time outdoors. Australia's successful "Slip! Slop! Slap!" campaign (later expanded to "slip, slop, slap, seek and slide") has reduced common skin cancers, but researchers are discovering sunlight has additional protective mechanisms beyond vitamin D. UV light appears to suppress certain immune responses by signaling through skin keratinocytes to regulatory immune cells, potentially explaining why autoimmune diseases increase with latitude. This immune suppression may help prevent autoimmune reactions against our own tissues, though excessive suppression can permit skin cancers to develop. Australian researchers have shown UV exposure can prevent experimental multiple sclerosis in mice, and early human trials suggest phototherapy might delay MS progression independent of vitamin D levels. Dermatologist Richard Weller discovered that skin stockpiles nitric oxide that can be activated by sunlight, explaining why blood pressure readings drop in summer. Just 20 minutes of British summer sunlight temporarily lowers blood pressure even after moving indoors. Nitric oxide also protects mice from weight gain and metabolic dysfunction on high-fat diets when exposed to UV light. These mechanisms may explain findings from the Melanoma in Southern Sweden study, which followed nearly 30,000 women for twenty years. Surprisingly, women with active sun exposure lived 1-2 years longer than sun avoiders, with sun avoidance reducing life expectancy comparable to smoking. Sun avoiders had double the death rate of high-exposure women, primarily from cardiovascular disease and conditions like diabetes and autoimmune diseases. Health policymakers face a dilemma balancing sun protection with sunlight benefits. Even Cancer Research UK recommends nuanced guidance based on the UV index. Indoor workers paradoxically face higher melanoma risk than outdoor workers, likely from "binge-bathing" on weekends or because office workers receive high UVA exposure (which penetrates windows) without protective UVB that stimulates vitamin D production. Ian Morgan's research reveals the myopia epidemic is linked to lack of outdoor time. In Australia, only 9.7% of Caucasian children are short-sighted compared to over 90% in urban China. His studies show Australian children spend 4-5 hours outdoors daily versus just 30 minutes in Singapore, and children of Chinese ancestry raised in Australia have only 3% myopia rates. Light stimulates retinal dopamine release, preventing eye elongation during development. A successful intervention in Guangzhou schools added 40 minutes of outdoor time daily, reducing myopia rates by 10%.

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第 7 章

Seasonal Mood Changes: Not Just in Your Head

Since ancient times, physicians have recognized the connection between sunlight and mood, from Aretaeus of Cappadocia prescribing sun exposure for "gloom" to Chinese medicine recommending seasonal lifestyle adjustments. Winter's psychological impact is especially pronounced in Scandinavia, where daylight becomes scarce or disappears completely during winter months. The modern understanding of seasonal affective disorder (SAD) began in the late 1970s when engineer Herb Kern approached researchers at the National Institute of Mental Health about his seasonal mood patterns. Researchers Alfred Lewy and colleagues hypothesized that extended melatonin secretion during long winter nights contributed to depression. They treated Kern with bright light exposure in mornings and afternoons to simulate spring daylight, successfully lifting his mood within days. Researcher Norman Rosenthal, himself affected by seasonal mood changes after moving from South Africa to the US, coined the term "seasonal affective disorder." SAD was formally recognized in 1987, with studies showing prevalence varies by latitude-from 9.4% in northern New Hampshire to just 4% in Florida. Unlike general depression, SAD typically features oversleeping and carbohydrate cravings rather than insomnia and appetite loss. Several theories explain SAD's mechanisms: we may retain mammals' biological season-tracking systems that respond to melatonin duration; SAD sufferers might be less responsive to light; or most prominently, the "phase-shift hypothesis"-winter's later sunrises delay our internal rhythms, misaligning them with sleep-wake cycles. Since mood follows circadian patterns, this misalignment could cause mood lows during daytime. Scandinavia has pioneered innovative approaches to winter darkness. In Rjukan, Norway, where winter sunlight never reaches the valley floor, artist Martin Andersen installed three 17m2 mirrors on the mountainside to reflect sunlight into the town square. Meanwhile, in Malmo, Sweden, where 8% suffer from SAD and 11% experience winter blues, psychiatrist Baba Pendse runs light therapy clinics where patients spend two hours in white-furnished rooms under bright lights. Unlike antidepressants, light therapy provides almost immediate relief. While most welcome summer's extended daylight, excessive light brings its own problems. Suicide rates peak in May-June in the northern hemisphere, particularly at higher latitudes. The increase in serotonin levels as days grow longer may trigger impulsive behaviors, including aggression and suicidal thoughts. Summer's bright days can also trigger mania in susceptible individuals, characterized by racing thoughts, euphoria, irritability and paranoia.

第 8 章

Light as Medicine: New Frontiers in Healthcare

We've made tremendous progress since Finsen established his Medical Light Institute 130 years ago. Scientists now understand how light interacts with our biology and the critical role circadian rhythms play in preparing our bodies for daily challenges. Misaligned or flattened rhythms are common in numerous diseases, suggesting that strengthening these rhythms with proper light exposure could improve health outcomes across various conditions. Psychiatrist Francesco Benedetti pioneered "triple chronotherapy" for treating severe depression, especially in bipolar disorder patients who don't respond to medication. The treatment combines sleep deprivation, lithium, and bright light exposure. Unlike antidepressants that take weeks to work, this approach produces immediate improvements in 70% of drug-resistant patients, with 55% maintaining benefits a month later. The therapy works by jump-starting flattened brain rhythms, as depression appears linked to circadian disruption. Scientists recognize that mental illnesses like schizophrenia, depression, OCD and eating disorders involve changes in neurotransmitters regulated by the circadian clock. These conditions show disruptions to circadian rhythms or variations in clock genes. Episodes often follow sleep disturbances or circadian misalignment-a hospital near Heathrow admits about 100 psychiatric patients yearly whose symptoms appear triggered by long-haul flight time zone changes. Despite Florence Nightingale's observations about patients needing fresh air and sunlight, many modern hospitals feature small windows and constant dim lighting. Studies demonstrate light's healing power: at Square Hospital in Dhaka, every 100 lux increase in illuminance reduced patient stays by 7.3 hours. Similarly, Canadian heart attack patients in brighter rooms had a 7% mortality rate compared to 12% for those in dimmer rooms. Disrupted circadian rhythms in hospital environments may impede recovery from serious illness. Premature babies exposed to natural light cycles of 12 hours light/12 hours darkness show shorter hospital stays and better outcomes than those in constant light or darkness. Recognizing these benefits, hospitals like the Royal Free in London are installing circadian lighting systems. At Glostrup Hospital in Copenhagen, the stroke rehabilitation ward uses bright blue-white light during daytime and amber-colored light at night, producing more robust circadian rhythms and reducing depression and fatigue at levels "comparable to giving them antidepressants." Our understanding of circadian rhythms is revolutionizing cancer treatment. Francis Levi discovered that chemotherapy drugs, which target rapidly dividing cells, could be timed to minimize side effects. Healthy cells divide at specific times while cancer cells often lack these rhythms. By identifying optimal timing windows, Levi showed that drugs like oxaliplatin could be administered with dramatically reduced toxicity. Other treatments show similar time-sensitivity: irinotecan works better in mornings for men and afternoons for women, radiation therapy causes less hair loss when administered in afternoons, and flu vaccines generate four times more antibodies when given between 9-11am versus later.

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第 9 章

Resetting Society's Clocks

The German spa town of Bad Kissingen has rebranded itself as the world's first "Chronocity"-a place where internal time is prioritized and sleep is considered sacred. This initiative began in 2013 when the town's business manager Michael Wieden, fascinated by chronobiology, saw an opportunity to distinguish Bad Kissingen from rival spa towns while promoting health through natural light cycles and proper sleep. Partnering with chronobiologist Thomas Kantermann, they developed a manifesto for societal change: later school start times, outdoor education, flexible work hours for different chronotypes, chronotherapy in health clinics, and building modifications to maximize natural daylight. Since 1884, the world has been divided into 24 time zones based on Greenwich Mean Time, with about a quarter of the global population changing their clocks twice yearly. Benjamin Franklin first proposed daylight saving time in 1784 to reduce energy consumption during dark evenings. However, it wasn't implemented until 1916 in the UK and 1918 in the US, following advocacy by William Willett. The transition to DST creates a form of social jet lag, with studies showing decreased vigilance, lower test scores, increased workplace "cyberloafing," more accidents, and even harsher judicial sentences in the week following the spring change. Health impacts include elevated risks of heart attacks, strokes, and psychiatric issues. Our biology remains tethered to the sun while our social clocks are influenced by political and historical factors. In Germany, which spans nine degrees of longitude, people's chronotypes are shackled to sunrise-those in the east wake on average 36 minutes earlier than those in the west, despite sharing the same time zone. Similarly, Americans living on the eastern edge of time zones are more lark-like than those on the western edge. Teenagers suffer disproportionately from social jet lag, with studies at Bad Kissingen's Jack Steinberger Gymnasium showing 40% of pupils experiencing two to four hours weekly, and 10% enduring four to six hours-equivalent to flying between Berlin and Bangkok. Their naturally later biological rhythms make early school starts particularly challenging. When schools in Minnesota delayed start times from 7:20am to 8:30am, students maintained their bedtimes but slept later, reporting less daytime fatigue and showing improved engagement. In one English comprehensive school, shifting start times from 8:50am to 10:00am reduced illness-related absences dramatically and improved exam performance. While schools are beginning to accommodate biological rhythms, workplaces lag behind. Research shows early-bird managers often misjudge later-starting employees as less conscientious, not recognizing their different productivity patterns. Sleep deprivation impairs self-control, with studies showing employees getting less than six hours sleep are more likely to engage in unethical behavior. Interestingly, the timing of such behavior differs by chronotype-larks behave more unethically late in the day, while night owls struggle morally in mornings. Similar initiatives are emerging elsewhere as awareness grows about light's profound effects beyond vision. We need not return to pre-industrial darkness, but must forge healthier relationships with natural light cycles. This means spending more daytime outdoors to benefit from sunlight's biological effects and realign our internal clocks. When that's impractical, we need innovative indoor lighting solutions-brightening workplaces by day and dimming lights at night. Though we create electric stars to light our nights, our biology remains fundamentally tethered to our mightiest star: the sun. As the author concludes after witnessing ancient solstice ceremonies at Stonehenge: "We are children of the sun, and we need its light as much as ever."

★★★★★

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《追逐太阳》核心主题

circadian rhythm
light pollution
biological clocks
human chronotypes
natural light exposure

《追逐太阳》经典语录

Ignoring this connection comes at our peril.
Suddenly, night became optional.
This brightness comes at a cost.
Chronic sleep deprivation can be deadly.
Our bodies are quite literally programmed by the sun.

《追逐太阳》主要人物

Linda GeddesAuthor and journalist exploring sunlight's impact
Hanna KingAmish woman living without electric light
Ben KingAmish man living in sync with natural light
David SamsonAnthropologist who studied Hadza sleep patterns

关于作者

Linda Geddes 是一位屡获殊荣的科学记者，也是《追逐太阳：阳光如何塑造我们的身体与精神》（Chasing the Sun: The New Science of Sunlight and How It Shapes Our Bodies and Minds）一书的作者。她擅长将复杂的生物学和健康话题转化为引人入胜的叙述。

作为前《新科学家》（New Scientist）编辑和《卫报》（Guardian）科学记者，Geddes 将她在利物浦大学获得的细胞生物学背景与十多年的调查报道经验相结合，深入探讨阳光对人类健康、睡眠和情绪的深远影响。

她的作品曾出现在 BBC Radio 4 的《Start the Week》节目和《Feel Better Live More》播客中。她为《泰晤士报》（The Times）和《每日邮报》（Daily Mail）等刊物撰写的文章赢得了多项荣誉，包括英国科学作家协会的调查新闻奖。Geddes 还是备受好评的怀孕科学指南《Bumpology》的作者。

《追逐太阳》被《每日邮报》赞誉为“改变生活”之作，该书将前沿研究与通俗易懂的故事讲述相结合，巩固了她作为科学传播领域领军人物的地位。

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由哥伦比亚大学校友创建源自旧金山

BeFreed 汇聚全球求知若渴的学习者

4.7

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BeFreed Community

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

查看更多网络上关于 BeFreed 的讨论

开启你的学习之旅，就是现在

第 9 章

追逐太阳

概述《追逐太阳》概述

一本书，多种聆听方式。

The Sun's Rhythm: A Dance of Light and Life

Our Bodies Run on Solar Time

边听边看，每个词都清晰呈现

When Artificial Light Changed Everything

The Dangerous Reality of Shift Work

从 《追逐太阳》中收获更多

Sunlight as Medicine: Ancient Wisdom Validated

Beyond Vitamin D: The Sun's Hidden Health Effects

边听边看，每个词都清晰呈现

Seasonal Mood Changes: Not Just in Your Head

Light as Medicine: New Frontiers in Healthcare

从 《追逐太阳》中收获更多

Resetting Society's Clocks

你已读完 《追逐太阳》

《追逐太阳》核心主题

《追逐太阳》经典语录

《追逐太阳》主要人物

关于作者

下载《追逐太阳》摘要

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关于本书的常见问题

What is Chasing the Sun by Linda Geddes about?

Who should read Chasing the Sun?

Is Chasing the Sun worth reading?

How does sunlight regulate our circadian rhythm?

发现更多

BeFreed 汇聚全球求知若渴的学习者

BeFreed 汇聚全球求知若渴的学习者

一本书，多种聆听方式。

The Sun's Rhythm: A Dance of Light and Life

Our Bodies Run on Solar Time

边听边看，每个词都清晰呈现

When Artificial Light Changed Everything

The Dangerous Reality of Shift Work

从 《追逐太阳》中收获更多

Sunlight as Medicine: Ancient Wisdom Validated

Beyond Vitamin D: The Sun's Hidden Health Effects

边听边看，每个词都清晰呈现

Seasonal Mood Changes: Not Just in Your Head

Light as Medicine: New Frontiers in Healthcare

从 《追逐太阳》中收获更多

Resetting Society's Clocks

你已读完 《追逐太阳》

用户还喜欢

发现更多

《追逐太阳》概述

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从《追逐太阳》中收获更多

你已读完《追逐太阳》

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从《追逐太阳》中收获更多

你已读完《追逐太阳》