This is how to train square chest muscles-------The structure of the chest muscles is only the major pectoral muscles and the minor pectoral muscles. However, due to the structure of the human body, the width of the pectoral muscles is affected by the distance between the shoulders.
Therefore, if you want to have square chest muscles, you must first practice broad shoulders. When doing bench presses, hold your hands wider.
You can stretch the chest muscles a little horizontally. When doing lower chest, you need to hold them wider. Do a little more than the upper chest.
When you find that the chest muscles are too full, you need to shrink the subcutaneous fat to achieve a nearly square chest effect.
