Fist

[3] Some studies have shown that making fists can help humans to cope with stress or anxiety because the mind gets preoccupied with the tightening of the muscle to focus on the issue at hand.

Fists are taught in martial arts like karate, kung fu, and taekwondo for the process of punching and striking.

[6] Improper formation of the fist while punching or striking an object can cause bruising and broken small bones in the hand known as Boxer's fracture.

Boxer's Fracture occurs when metacarpals or small bones in the hand break on the side of the pinky and ring finger.

When his colleagues ignored the warnings, Don Francis pounded his fist on the table demanding to know, how many deaths did we need before we acted?