The reason may be that every break is not in place and the training method is not in place. For example, the first group can do 10 exercises at most, and then do another group immediately after a rest of 60-90 seconds. The interval between each movement is 2-3 minutes, and the total training time should not exceed 90 minutes.

In addition, after training 15-30 minutes, supplement 1 00g of food, such as1skim bread 1-2 eggs, to supplement nutrition and physical strength.

Other suggestions:

(1) Exercise after sunrise at breakfast. Eat100g digestible food and a little milk 30-60 minutes before exercise.

(2) Exercise for one and a half hours after breakfast.

(3) Start two hours before dinner and eat 100g digestible food 30-60 minutes before exercise.

(4) High-protein foods should be supplemented with beef and chicken at ordinary times to develop the habit of going to bed early and getting up early.