Best quote from Are saunas safe for heart health?
Research shows your heart rate can climb to 150 beats per minute, mimicking moderate exercise like a brisk walk without you moving a muscle. It’s like a cardio session while sitting still.
This audio lesson was created by a BeFreed community member
Please tell me everything you can about saunas wanna know if the red light or regular heat is better also want to know health benefits risks how often you should use them and are they safe for people that have had a heart attack or a fib?
Frequently Asked Questions
Sitting in a sauna mimics moderate exercise because the high temperatures cause your heart rate to rise, sometimes reaching up to 150 beats per minute. This process increases cardiac output by 60 to 70 percent and releases nitric oxide, which signals blood vessels to expand. This "exercises" the lining of the arteries, improving their flexibility and helping to lower resting blood pressure over time without the need for physical movement.
Traditional saunas heat the air to very high temperatures, often up to 212 degrees Fahrenheit, creating intense thermal stress as the body works hard to cool itself from the outside in. Infrared saunas use light waves to heat body tissues directly at much lower air temperatures, typically between 120 and 150 degrees. For those with heart conditions, infrared options are often considered gentler because they provide the same cardiovascular benefits with a less sudden and stifling climb in heat.
Medical guidelines generally suggest waiting at least three to four weeks after an uncomplicated heart attack, provided the patient is stable and cleared by a doctor. For those with AFib, the primary concern is that heat can cause dehydration and electrolyte imbalances, which may trigger irregular rhythms. It is critical to avoid saunas if you have "decompensated" heart failure, such as shortness of breath at rest or fluid retention, as the heart may lack the reserve capacity to handle the cooling process.
While the transition from hot to cold is a popular wellness trend, it is dangerous for those with heart histories. The sudden shock triggers a "diving reflex," causing an immediate and massive spike in blood pressure and heart rate. This intense stress can trigger a heart attack or serious arrhythmia. Instead, heart patients should opt for gradual cooling, such as sitting in a room-temperature area or taking a lukewarm shower.
Users should leave the sauna immediately if they experience chest pressure (angina), sudden lightheadedness, or an uncomfortably racing or skipping heartbeat. Lightheadedness is particularly dangerous for heart patients because heat draws blood to the skin's surface; standing up too quickly can cause a drop in blood pressure to the brain, leading to fainting and potential injury. There is no "no pain, no gain" rule for heart health in a sauna.
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From Columbia University alumni built in San Francisco
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
