The Performance-Enhancing Power Of Caffeine
The world's most widely used drug boasts some powerful beneficial for runners.
stimulants
Do The Performance Benefits Of Caffeine Come At A Cost?
The popular stimulant can improve performance, but it might have some drawbacks that most people don’t consider.
Can A Cup (Or Two) Of Coffee Improve Performance?
A British study says high doses of caffeine can improve performance by as much as six percent.