by Steve Magness
The popular stimulant can improve performance, but it might have some drawbacks that most people don’t consider.
by Mario Fraioli, Published Mar. 28, 2012, Updated Mar. 28, 2014 at 11:18 AM UTC
A British study says high doses of caffeine can improve performance by as much as six percent.
by Matt Fitzgerald, Published Aug. 18, 2011, Updated Mar. 27, 2012 at 1:16 PM UTC
The world's most widely used drug can make you a better runner.
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