Post-exercise Caffeine Helps Muscles Refuel

Glycogen, the muscle's primary fuel source during exercise, is replenished more rapidly when athletes ingest both carbohydrate and caffeine following exhaustive exercise, new research shows. Athletes who ingested caffeine with carbohydrate had 66 percent more glycogen in their muscles four hours after finishing intense, glycogen-depleting exercise, compared to when they consumed carbohydrate alone, according to the study.

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