Generally, people who have just started fitness often have the problem of asymmetry of chest muscles. The main reason is that the muscle development of people's left arm and right arm is different. When training the pectoral muscles, the imbalance between the left and right triceps will cause different loads on both sides of the pectoral muscles, which will lead to different muscle development speeds. But in the initial stage of fitness, it will gradually improve after half a year. The most important thing for you is to use a lighter load for chest muscle training, that is, a group of weights can be about 15. Make sure that the action standards of the left arm and the right arm are the same, and

You can improve the visual effect of the asymmetry of the pectoral muscle by strengthening the outer edge of the pectoral muscle, as long as you add the flexion and extension of the double arm bars to your usual pectoral muscle training (as long as you can do it outdoors with parallel bars). This action has a very good effect on shaping the lower edge and outer edge of the pectoral muscle, which will greatly increase the area of the pectoral muscle and make the imbalance of the pectoral muscle volume less obvious.

If you want to focus on correction, the most convenient way is to practice at home, buy a spring stretcher and fix it at the end slightly higher than the head, and then do a unilateral spring stretcher to expand the chest, which is quite helpful to correct the imbalance of chest muscles. In addition, you can also use one-arm push-ups. If it is a little difficult at first, you can use the method of leaning against the wall. The above training is aimed at the weak side of the pectoral muscle.

Or you can use passive training, that is, stop all training related to chest muscles and focus on shoulders and back. 1-2 months later, the asymmetry of chest muscles will be improved to some extent (the effect varies from person to person).