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Wake up and smell the coffee: caffeine supplementation and exercise performance — an umbrella review of 21 published meta-analyses
Grgic J, Grgic I, Pickering C, Schoenfeld BJ, Bishop DJ, Pedisic Z · British Journal of Sports Medicine 54(11):681–688 · 2020
Key finding
Caffeine is ergogenic for endurance, strength and power — which is why timing (not abstinence) is the lever.
Citation
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