I used to be a tutor. You have this situation, and the clothes on the side with large muscle mass are tighter. However, it should be said that everyone will have uneven muscle size on the left and right sides of the body, but according to the training situation, some people have a large gap in muscle size, while others are relatively balanced. The choice of clothes depends on your physical condition, but it's best to choose clothes that are a little looser, because your muscles are growing because of exercise. Once every three months, a person's lean weight has increased by nearly 20 Jin, and all clothes must be bought new. I hope it will help you choose clothes according to the amount of exercise and physical condition.