The muscles on the shoulders are deltoid. The deltoid muscle is divided into three bundles: anterior, middle and posterior. You can do push-ups and tiptoe bench presses to practice; In the middle beam, grab the dumbbells with both hands and hang them on both sides of your legs, then do a 90-degree flat lift and repeat; Behind, grab the dumbbell with one hand, bend your body forward 90 degrees, and lift your arms back and forth. Repeat. Each group does the limit. Remember not to do it every day, but every other day. Every time you do anaerobic exercise, you should destroy your muscle tissue as much as possible, and then use enough time and nutrition to repair the damaged muscle tissue and let it grow. To put it bluntly, muscles grow out at rest after anaerobic exercise. Only by scientific fitness can we have perfect muscles, develop individual muscles and eat normally. (Changyang Xiaohua is original, don't copy it, don't be anonymous, the plagiarist is shameless! )