and easing post-workout pain. Some of the 19,000 or so caffeine-based studies carried out over the years indicate benefits for asthma sufferers and Harvard Medical School has stated: "Coffee may reduce the risk of developing gallstones, discourage
problem for healthy people." And it doesn't turn 100 years of scientific research on caffeine's performance-enhancing properties on its head. "Caffeine's effect is both psychological and physiological," says Dr Lawrence Armstrong, a professor of exercise
