The biggest possibility is that the blood vessel is ruptured. The usual method is to have a rest. Suitable for cold compress within 24 hours of injury.

Resistance training can lead to the rupture of tiny blood vessels. Under normal circumstances, the ruptured blood vessels are very small, and the amount of retention and bleeding at the end of the blood vessels can be ignored or even imperceptible to the naked eye. Severe rupture can lead to bloodshot and bruises. Of course, most people will get better after a period of rest.

In addition to overexertion, this is generally related to the action specification, that is, the way of exerting force. Therefore, we should pay attention to the standardization of movements and reasonable training plans.