
Which is actually a Good Thing: despite the guilty pleasure and bad reputation coffee has generated, there is growing consensus among medical researchers that drinking coffee improves, rather than harms our health and fitness.
Besides keeping you awake, coffee may provide an increasing number of potential health benefits, including protection against liver and colon cancer, type 2 diabetes, and Parkinson's disease, according to some recent scientific studies.
But there's also a downside: too much java can make you jittery and cause stomach pains, and some studies have tied it to elevated blood pressure and heart rates. Why the dichotomy?