What is the asymmetry of the pectoral muscles?
   One big and one small chest muscle is the asymmetry of the pectoral muscle. The main reason for the asymmetry of the pectoral muscle is caused by people's long-term unilateral exercise habits, such as the right hand activity ( power ) is greater than the left hand, or the unilateral exercise habit. Small , so the right chest muscle developed , and the innate muscle asymmetry. Almost all people have such problems, but they are obviously not obvious. When the gym began to develop a clear large chest muscle, the problem of asymmetry is easy to see, how to correct it ? 
Correcting the chest muscles one big one is mainly when exercising, the small side is more powerful ; in the future, you can try it in the fitness process, in general, it is targeted to train small breast muscles. Here are a few ways to correct the chest muscles .
One-sided push-ups
Of course, people can't do push-ups by unilateral limbs. You can do this. If you want to practice your left chest, then hold your left hand on the ground, raise your right hand, put it on the stool, and then force your left hand as much as possible. The right hand is only used to maintain balance, so that the effect of exercising the left chest alone can be achieved.
One-sided press (with dumbbells or other instruments)
    When we push the weight up, the upper part of the chest muscle will also exert force. In this way, you can use one hand to push up the dumbbell, and you can also achieve the effect of exercising the unilateral chest muscle. This action has a good workout effect on the chest and requires you to have a very high balance.
Sit-up or one-handed bench press
When using a barbell for bench press, the weight of the barbell can be more weighted on the weaker side of the chest muscle ; when using the dumbbell to perform the bench press action, the one-handed dumbbell bench press can be performed.
Parallel bar lateral arm flexion and extension
When doing the side-arm flexion and extension of the parallel bars, the body's center of gravity is biased toward the side of the weaker chest muscles while the body is descending. At the same time, it stays at the lowest point for 3-5 seconds to do the " peak contraction " state, which is beneficial to the muscle growth of the weaker chest muscles.
Single arm side elastic rope
Friends in the gym can use the one side of the weak pectoral muscle to do one-armed body elastic rope resistance stretching exercises for correction.
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