2. The middle-distance push-ups are slightly larger than the shoulder width, mainly to exercise the middle part of pectoralis major (increase the thickness) and develop the toe of deltoid muscle and triceps brachii.
Push-ups mainly exercise the triceps brachii muscle group, and also exercise the deltoid toe, serratus anterior muscle, coracoid process and other body parts. Its main function is to improve the muscle strength of upper limbs, chest, back and abdomen.
Standard operation:
To achieve a perfect starting position of push-ups, the body must be kept in a straight line from the shoulders to the ankles, the arms should be placed on the chest, and the distance between the hands should be slightly wider than the shoulders. This can ensure that each movement can exercise the triceps brachii more effectively.
When doing push-ups, it takes 2 to 3 seconds to completely put down your body. Finally, the distance between the chest and the ground should be about 2 to 3 cm. Then, you should immediately prop it up and return to the starting position.
Refer to the above? Baidu Encyclopedia-Push-ups (Common Fitness Exercise)