How long does it take to exercise for a week to be healthy?

Under normal circumstances, it is advisable to exercise for 3 to 5 hours a week. If it exceeds this range, it will not only fail to exercise, but also damage human function and increase the probability of heart disease and cardiac arrest.

Although longer exercise does bring more benefits, the most critical "effective dose" is only the first 5 ~ 15 minutes. In other words, as long as you do 5 minutes of high-intensity activities and 15 minutes of moderate-intensity activities every day, you will reach the standard.