Count on Coffee

True, sipping eight glasses of water daily is smart; women work out almost 33% longer when they are well-hydrated, notes cardiologist Stephen T. Sinatra, M.D., author of Optimum Health. But for added oomph, sip some java before hitting the gym. A shot of caffeine can boost metabolic rate by 5%, enough to boost your fat burn by 31% during exercise!

--Woman's World Magazine