If you exercise at home, it is mainly push-ups and sit-ups, which is the most indigenous and responsible. Don't strengthen your strength from the beginning. After half a month, increase strength, put your legs on the bed and put your hands on the ground in an oblique shape. It is easy to exercise. And one-handed push-ups After a while, your chest muscles and back muscles are much thicker, and your chest muscles are as simple as that. Don't be too violent at first, your muscles will hurt, but you will be exhausted every time.