Fist

A fist is a hand when the fingers are bent in towards the palm and held there tightly. To make or clench a fist is to fold the fingers tightly into the center of the palm and then to clamp the thumb over the middle phalanges; in contrast to this "closed" fist, one keeps the fist "open" by holding the thumb against the side of the index finger. One uses the closed fist to punch the lower phalanges against a surface, or to pound with the little-finger side of the hand's heel; one uses the open fist to knock with the middle knuckle of the middle finger.

For other uses, see Fist (disambiguation).
A raised, closed fist

Physiology and neurology

Making a fist is virtually unknown among other primates. This is because while "most primate hands are long of palm and finger [and] short of thumb", the proportions are the opposite for humans.[1]

At least one study has claimed that the clenching of one's fist can be used to recall information.[2]

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.[3]

Boxing

Formation of a fist for the purpose of punching is the most basic knowledge taught in the sport of boxing. Fists are taught in martial arts like karate, kung fu, and taekwondo for the process of punching and striking.[4] Fight 100% says "more than 90% of the people actually don't know how to make a fist correctly", and adds that correct formation means the user "won't break [their] hand", "won't strain their wrist", will "be able to launch very powerful punches", and "be able to knock someone out in one punch".[5]

Improper formation of the fist whilst 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. The name derives from the fact that such injuries are most common in boxers and practitioners of other fighting arts.[6]

Other uses

The raised fist is also a symbol of rebellion, militance, resistance and unity.[7]

Various phenomena, which include the term "fist" in their name such as the sexual act of fisting or the fist bump greeting, involve the use of a fist.

gollark: yes it can.
gollark: Only if it's impossible to simulate a brain on a ridiculously powerful computer, which... well, we don't know, but it seems unlikely.
gollark: I suppose the physical processes they run on might not be Turing-computable?
gollark: How would our brains be more-than-TC?
gollark: Ah.

References
  1. "The evolution of the hand: Making a fist of it". The Economist. 2012-12-22. Retrieved 2013-05-05.
  2. Szalavitz, Maia (2013-04-29). "Clenching Fists Can Help Improve Memory, Researchers Find". Healthland.time.com. Retrieved 2013-05-05.
  3. "Clenched fist can help us deal with stress, scientists say". Telegraph. 2010-10-19. Retrieved 2013-05-05.
  4. "Making A Fist". FightingArts.com. 2011-08-15. Retrieved 2013-05-05.
  5. "How To Make A Fist". Fight100.com. Archived from the original on 2013-05-03. Retrieved 2013-05-05.
  6. "Boxer's Fracture". WebMD.
  7. "A brief history of the "clenched fist" image". Docspopuli.org. Retrieved 2013-05-05.
  • Media related to Fists at Wikimedia Commons
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