At that time, in order to achieve the goal quickly, I trained almost every day after work and on rest days, rain or shine. It was fine a few days ago, and the progress is quite obvious. Later, I felt very tired after training one day, but I just couldn't sleep at night, and I didn't have the spirit during the day, and my appetite became very poor, which led to the inability to keep up with the later training plan.

Later, I realized that I had overtrained.

If you are in the same situation as me, arrange a rest quickly.