A fist is a hand that has been closed tightly, with the fingers curled inward and the thumb wrapped around them. This position is often used to show strength or determination. Fists can also be used in various activities, such as sports, martial arts, or as a gesture of solidarity. In many cultures, a raised fist symbolizes resistance or unity, often associated with movements for social justice. The act of making a fist can also serve as a physical expression of emotion, such as anger or frustration, and is sometimes used in communication to emphasize a point.