The human body is wonderful. Do it the day after you barely finish the exercise, and you will find that you are not as tired as before, which makes the human body's special endurance! It is strongly recommended to finish dumbbells, and your arms are sore and swollen. At this time, it is your own arm that moves as much as possible, such as pinching, massaging and swinging. To disperse muscle fibers and make them evenly distributed and more comprehensive! Large quantity causes qualitative change. It is suggested that the dumbbells used should not be too heavy, which will damage the muscles. Do it slowly from the place you think is suitable, in groups of ten or more, step by step!