Reference; http://seino-1987.jp/blog/6968.html
Modified and translated by CFJA
After exercising, the body becomes fatigued, making you feel sleepy. Since sleep is essential for recovery, it is beneficial to go to bed earlier and sleep longer than usual on days when you’ve had an intense workout.
During sleep, the heart rate slows down, and body temperature slightly drops. Because of this, sleeping immediately after exercise is extremely dangerous, as it forces the heart, which is still actively working, to suddenly slow down—like slamming on the brakes of a moving car.
Why Sleeping Right After Exercise is Dangerous
If you’ve ever watched a marathon race, you may have seen runners collapse at the finish line after running at full speed for two hours. When this happens, medical staff quickly assist the athlete and prevent them from lying down and sleeping immediately. This is because allowing the body to shut down too quickly can be life-threatening.
For those who only do light exercise at home, the heart may not be under extreme stress, but making a habit of going to bed immediately after exercising at night can increase the risk of a heart attack (myocardial infarction) in the early morning hours when temperatures drop.
Important Precaution
➡ Always wait at least 30 minutes after exercise before going to sleep.
This allows your heart rate and body temperature to gradually stabilize, reducing the risk of serious cardiovascular issues.
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