Make a Fist With Your Left Hand

The Atlantic has a story about a study that claims athletes can prevent choking under pressure by making a fist with their left hand. It only applies to situation where they are performing a task they have performed many times before (a "motor skill").

"Hemisphere-specific priming" appears to discourage over-thinking in high-pressure situations. Activating the right hemisphere of the brain by doing a simple action with the left side of the body (making a fist, in this case) appears to negate context-related declines in complex motor performance.

via kottke.org