Maybe your muscles are using the wrong force. For example, pull-ups are a good way to exercise latissimus dorsi. Some people overuse their arms when their back muscles don't have much strength, which causes the biceps brachii and forearm to be particularly sore.

It is also possible that you are doing too much intensity. I suggest you reduce the intensity, suit yourself and stimulate in place.

Finally, there is a subtle possibility that your body is not suitable for fitness. Some people suffer from congenital heart disease or acquired hernia. It's not impossible, it's just that the body sometimes has abnormal reactions. Well, it depends.

In addition, nutrition can also cause adverse reactions to the body, but is this the best solution?