You know little about fitness. The process of losing weight and gaining muscle is completed at the same time. The natural adjustment process of the body is muscle gain or anaerobic exercise. When you practice, you will naturally lose fat and gain muscle (muscle cells are not increased, but increased). After practice, the recovery time of different muscle groups is different. Abdominal muscles are the fastest, chest muscles and arm muscles need 24 hours, and some muscles need more than 48 hours. During the exercise, muscle cells are stimulated to produce capillary blood. The tube is broken, and the area where you feel training is congested and swollen, so you need enough time for muscle cells to grow again. Too much practice will slow down the speed, cause sports injuries and affect the effect, but the interval should not be too long. So the solution is to practice different muscle groups every day. First-time fitness exercisers should remember a rule: step by step, don't be impatient,

Training is a process from quantitative change to qualitative change, and any behavior that violates this law will be together.