Coffee is good for you! According to a new study, it’s the best source of antioxidants — better than tea, fruits, or vegetables. And when journalist Aaron McKenna tested various methods of overclocking yourself, he found coffee to be the most effective.
In moderation, of course. Too much caffeine will be bad for you. You can even kill yourself with the stuff, if you drink huge amounts of it. Energy Fiend has a handy Death by Caffeine calculator that uses your body weight to determine how much of your favorite caffeinated beverage constitutes a semilethal dose (technically, the LD50). According to the calculator, it would take 56 cups of drip coffee (or 146 cans of Mountain Dew) to kill me.