Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Capsicum (commonly known as chili pepper or cayenne) contains the active compound capsaicin, which has attracted interest in the context of athletic and exercise aids. Scientific research suggests capsaicin can influence exercise performance primarily through its effects on pain perception, metabolism, and thermogenesis. Capsaicin activates TRPV1 receptors, which may reduce the perception of pain and exertion during exercise, potentially allowing athletes to push harder or longer. Some studies have reported modest improvements in endurance performance and reduced perceived effort following acute capsaicin supplementation.

Additionally, capsaicin is known to increase energy expenditure and fat oxidation, which could theoretically support body composition goals relevant to athletes. However, the magnitude of these effects appears to be small, and results can be inconsistent across studies. Most evidence comes from small-scale human trials or laboratory studies, and more research is needed to clarify optimal dosing, timing, and long-term safety. There is little support for capsaicin enhancing muscle strength or recovery directly.

In summary, while there is emerging scientific interest and some preliminary evidence supporting the use of capsicum or capsaicin as an exercise aid, the overall quality and quantity of evidence is limited. The effect sizes are modest, and capsicum should not be considered a primary ergogenic aid. Its use in this context is justified by early scientific findings rather than longstanding traditional use.

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