It is necessary to rest when doing muscle exercise, but the time should not be too long. Muscle exercise consumes a lot of nutrients. After the exercise, after proper rest, the nutrients in the muscles will be replenished quickly, and the amount of supplementation will be more than the consumption. Physiologically, this phenomenon is called "excessive recovery".

"Excessive recovery" makes muscles get more nutrition, and the more they practice, the more developed they become. If you don't give muscles enough time to replenish nutrition, they can't grow stronger than before. Some studies believe that this rest time is calculated on the basis that the muscles have the last exercise ability again, which usually takes 2-3 days.

Extended data:

After 2-3 days, if there is no stimulation of exercise, the effect of the previous exercise will gradually fade. This is because muscle is also composed of various protein, and protein, a muscle component, is also in a dynamic change of constant consumption and constant supplement. If you add more, your muscles will grow; If you eat too much, your muscles will decline.

If you don't exercise in time, there are no factors that stimulate muscle growth, and on the other hand, the substances that make up muscles are constantly being consumed, people who exercise will naturally find that the exercise effect is not obvious, the muscle volume is smaller than before, the arm is weak, and the muscle is not as hard as before. This is why sports can't "fish for three days and dry the net for two days".

People's Network-Don't practice muscles for more than three days (fitness tips)