2. It may be that nutrition and diet have not kept pace with consumption. As long as it is not to lose weight, it is necessary to supplement considerable food and nutrition after fitness.
3. What is the concept of fitness frequency? For beginners, three times a week is already moderate intensity. If you feel too tired, you should have a full rest. If you don't have enough rest, you should do the next exercise, which will consume the energy stored in your original body, which is excessive for your body and not effective exercise.