If you don't like to exercise or want more energy when you do – or simply want to get in a better workout – then try a cup of coffee. Sure, you've heard it before: Caffeine helps improve athletic performance. But the new evidence in favor of the wonder drug is so overwhelming that if you're not swigging some form of caffeine before your workout, you're doing your body a disservice. Don't believe us? Here are six reasons why you should consider coffee, tea, or Red Bull before, during, and even after your next trip to the gym.