From @ipso ‘s site: Eat bananas (and avoid caffeine): ...bananas to his jumpy music students and warns them away from coffee, which speeds up a racing heart. Eating bananas theoretically could work like taking a beta blocker because potassium has a role in calming the heart, and many performers believe in them. But there’s another reason they may work. “Of the people who do need help with performance anxiety, 20 percent to 25 percent will get a response from a placebo,” says Dr. Christopher Crow. “Sports psychologists deal with this all the time: When the pressure’s on, how does my mind remain calm?”