My wrist hurts, especially when I practice triceps brachii. Why?

Hello! According to your situation, it should be that your wrist has been injured before and has not recovered, or there is something wrong now. It is recommended to go to the hospital for examination! The remedy is poor posture when doing exercise. You can try to keep the back of your hand and forearm on the same level when doing the action, and be careful not to deform (don't bend your wrist) when exerting force, and then reduce the weight. When exercising with equipment, remember to keep the back of your hand and forearm at the same level when doing any difficult movements with your hands and forearms (of course, this is a beginner, especially those with wrist injuries).