Research
Micronutrients & recovery
Short-term (7-day) supplementation with cocoa polyphenols (~240 mg/day) does not reduce platelet activation or aggregation in response to acute exercise in either trained or sedentary men.
Taking cocoa polyphenol supplements for one week will not protect your platelets from the stress of a sudden intense workout. If you are sedentary, do not rely on supplements to make strenuous exercise safe; focus on building fitness gradually.
GoodRefutesHIGH confidence
Seven days of cocoa polyphenol supplementation had little effect on any of the parameters measured.
Why this rating
Randomized crossover design, double-blind, placebo-controlled.
Source
The effect of exercise and training status on platelet activation: Do cocoa polyphenols play a role?
Indu Singh et al. · Platelets · 2006
DOI 10.1080/09537100600746953
crossover · n=16Cited 37×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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