Some people are born with asymmetrical muscle diaphragms. This is normal. If you look at it, it looks crooked. In fact, it has no effect on the internal organs. It is difficult to make it symmetrical through normal training. If you want to be symmetrical, it is recommended to use thin ones during training. Press the bamboo chopsticks on the abdominal muscle lines as much as you need to make up for it. After a long time, you can still correct it slowly