Stress hand fist

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. Making a fist is virtually unknown amongst other primates. At least one study has claimed that the clenching of one's fist can be used to recall information. 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.

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Hand pain is more than just annoying. The stiffness and swelling that go along with hand pain can sap strength and diminish the ability to carry out routine functions, like buttoning clothes. One common cause of hand pain is osteoarthritis—when the shock-absorbing cartilage between bones in the finger joints and at the base of the thumb becomes worn or damaged. Hand pain can also result from nerve conditions, like the pain and tingling you feel when there is pressure on the median nerve in the wrist or the ulnar nerve near the elbow. Sometimes hand pain results from tendinitis, an inflammation of the tissue that attaches muscles to the bones.

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