Legion's Pulse pairs 350mg caffeine with 350mg L-theanine (1:1 ratio) to smooth the stimulant edge, plus 8g citrulline malate, 3.6g beta-alanine, and 300mg alpha-GPC. Naturally sweetened, third-party tested, and dosed at clinically effective levels—no proprietary blends or artificial dyes.
Multiple meta-analyses and RCTs confirm that caffeine improves strength, power, and endurance performance, with effect sizes of 2–3% in trained athletes. Beta-alanine shows modest but consistent gains in high-intensity exercise lasting 1–4 minutes. Citrulline malate demonstrates improvements in muscular endurance and reduced fatigue perception. The combination of these ingredients in a pre-workout formulation is supported by the underlying ingredient literature, though few studies test the exact branded product.
Pulse is a pre-workout supplement typically containing caffeine, beta-alanine, citrulline malate, and other ergogenic compounds. Caffeine blocks adenosine receptors to increase alertness and reduce perceived exertion; beta-alanine buffers muscle lactate to delay fatigue; citrulline malate enhances nitric oxide production for improved blood flow and nutrient delivery to muscles.
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Meta-analysis
“The aim of this systematic review with meta-analysis was to determine the effect of caffeine gum (Caff-gum) on exercise performance-related outcomes.”
“Although the effects of caffeine supplementation on combat sports performance have been extensively investigated, there is currently no consensus regarding its ergogenic benefits.This systematic review with meta-analysis aimed to summarize ”
“BACKGROUND: The benefits of oral caffeine intake to enhance several aspects of physical performance, such as aerobic endurance, strength, power, and muscle endurance performance, are well supported.”
“PURPOSE: This study aimed to investigate and compare the effects of chronic supplementation with L-Citrulline (LC) vs.”
Individual responses vary widely; caffeine sensitivity, tolerance, and timing matter. Most studies use doses at the higher end of typical pre-workout servings, and some ingredients (e.g., beta-alanine) require chronic loading to show benefit. The evidence is strongest for isolated ingredients in controlled settings; real-world adherence, diet, and training quality confound outcomes. Branded pre-workout products are rarely tested as a whole formulation in RCTs.
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