Zhang Xuefeng's sudden death has little to do with staying up late; it was caused by high-intensity exercise.

Cardiac arrest means the heart suddenly stops beating. When running, the heart rate generally exceeds 100 beats per minute, so how can accidents not happen? Normally, it beats over 70 when at rest, and during sleep, it can sometimes drop to over 60.

I have seen many news reports of sudden deaths related to running and cycling, but very few related to sleeping; generally, these cases involve elderly people.

Excessive exercise is not the issue; it’s like a car that has been driven for many years—you can't keep flooring the gas pedal without causing problems.

For ordinary people, it's best not to over-exercise; modern society does not require you to run fast. You just need to ensure good dietary habits every day. Maintaining your figure doesn't necessarily rely on exercise; on the contrary, less exercise is often the best approach.

Exercising is the biggest scam.