Research

Hormonal

Consuming energy drinks containing approximately 2 mg/kg body mass of caffeine 10-60 minutes before exercise improves mental focus, alertness, anaerobic resistance exercise volume, and endurance performance.

If you are a healthy adult looking to boost performance, consume an energy drink 10-60 minutes before your workout. Aim for a dose providing roughly 2mg of caffeine per kg of body weight. This will likely improve your focus, alertness, and lifting volume or endurance time. Be aware that high-calorie versions can lead to weight gain if not managed within your daily calorie budget, and those with heart or metabolic conditions should consult a doctor first.

GoodSupportsHIGH confidence
Consuming ED 10-60 minutes before exercise can improve mental focus, alertness, anaerobic performance, and/or endurance performance.
Bill Campbell et al. · Journal of the International Society of Sports Nutrition · 2013

Why this rating

Based on a systematic review of multiple studies showing consistent improvements in specific domains, though additive benefits of other ingredients are equivocal.

Source

International Society of Sports Nutrition position stand: energy drinks

Bill Campbell et al. · Journal of the International Society of Sports Nutrition · 2013

DOI 10.1186/1550-2783-10-1

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DOI resolved against Crossref · corpus check 2026-06-10

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