First of all, protein needs protein for muscle growth. You burn muscles, of course you lack energy.

In addition, in Chinese medicine, not only these but also essence, qi and spirit.

The next day, the virtual strength was reduced.

However, it can be restored. Generally speaking, if you have a good rest and good nutrition intake, it is 1 2 days.

If it's long, it looks like four or five days.

However, this is a normal physiological phenomenon, and it is impossible to stop working because of fitness.