Beta-alanine has long had a murky track record for lifting, but a new randomized controlled trial may explain why. When trained lifters took 6.4 g per day for four weeks, their total reps rose 17.3% on drop sets and 18.2% on bi-sets, while placebo showed no significant gains. Perceived exertion, motivation, and affect did not differ between groups, so the boost was physical rather than psychological. Here is the dose, the loading period, who the data applies to, and who should stay skeptical.
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