All bodybuilding professionals believe that bench press is the most powerful action to strengthen chest muscles. The pectoral muscle is divided into two parts: the upper bundle and the lower bundle. The upper bundle does bench press exercise at an oblique angle, and the lower bundle does bench press exercise at an oblique angle. Combined with birds of various angles, you can practice chest sewing, and the outer edge of the chest muscle needs to be pushed horizontally. Combined with the flexion and extension of parallel bars, you can take a forward posture with a wide grip distance. Take enough protein, pay attention to rest, and don't be eager for quick success.