Don't exterminate, cultivate
. That fluttery fight-or-flight feeling you get when stressed can work in your favor. In a University of Rochester study, half the volunteers about to deliver a speech were told that pulse-racing, hand-drenching, gut-wrenching sensations are just nature's way of delivering more oxygen to the brain and helping us perform better under pressure
. The result: They felt and did better than those who tried to ignore or squelch their stress—even if they were more nervous beforehand.