First of all, you should be clear about your exercise purpose: do you want to build a thick chest muscle, or just shape a little chest shape, or develop a certain part of the chest muscle, or let the whole chest muscle develop. The purpose is clear, we must consider what actions to practice what parts. For example, with the usual push-ups, it is very effective to practice the outside of the pectoral muscles. It is the most common and effective way to practice chest muscles. If you just want to do general chest muscle exercise, you don't have to be like a special bodybuilder, then this kind of exercise is the best and most convenient. Not limited by venues and tools, it can be done almost anytime and anywhere. But if the requirements are higher, you have to practice with some equipment, such as bench press, barbell and bench press. However, it is very adjustable, and the parts of the chest muscles are different with different grip distances. The narrower the grip distance, the closer the training site is to the inside, and the middle seam of the pectoral muscle can be shaped. If you have a wider grip, you can practice, outside the chest muscles. In addition, the bending and stretching of the parallel bars arm is an effective action to shape the lower and outer edges of the pectoral muscles. There are also difficult movements of supine birds, which are good for the development of the whole pectoral muscle. (A flying bird is lying on its back, with its hands crossed with its body, holding the dumbbells with both hands, and then slowly lifting them to the middle until the two dumbbells touch) and practicing the butterfly swimming machine on special equipment are all effective. However, it is suggested that it is best to practice with basic movements, that is, bench press, push-ups and inclined plate bench press (to practice the upper part of chest muscles). Also, pull-ups, although mainly training back muscles, are still effective for chest muscles (especially upper chest muscles). The above is just a choice of action. In fact, the more important exercise principle is: "Do what you can, step by step". If you are not careful, you will get hurt, which is counterproductive. Proper nutrition and recovery are important factors and should not be neglected.

Find the right goal, find the right method, persevere, and it will be effective.

The above is just a superficial discussion. It is recommended to go to a special gym to exercise regularly. There are special coaches and venue equipment. The effect will get twice the result with half the effort.