Because most people are right-handed, as far as this issue is concerned, it is indeed a weakness or spot on the left side for people who exercise less. Because it is used less, it is called.

But for people who do a lot of exercise, especially those who exercise regularly, the left pectoral muscle is high and the right pectoral muscle is wide but not high. Why? Because when practicing chest muscles, especially bench press, the left hand is weak and the chest muscles exert strength, this is the correct method of chest muscle exercise. The right hand is strong, the arm is hard, and the chest muscles are not easy to use. Therefore, fitness people find that after practicing chest muscles, the left chest is high and the right chest is not high enough for the left. The left side of the rest day is used less, so you can rest and recover completely. For a long time, the left pectoral muscle is larger than the right. Just ask the people around you who like fitness.

If you want to overcome the problem you are talking about now, start proper exercise. You are in good health, in good shape, and everything is fine.