Using Caffeine Without A Prior Caffeine Fast
Caffeine boosts endurance performance by affecting brain chemistry in a way that lowers perceived exertion, or how hard it feels to run at a given pace. But it only works in those who are non-habituated to caffeine. If you’re a regular coffee drinker or user of caffeine in other forms, you must go caffeine-free for at least a week before a race to enjoy the performance-enhancing effect of taking caffeine on race morning.
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