Nutrition · Moderate evidence

Caffeine and Performance

Caffeine at doses of 3 to 6 mg/kg improves aerobic performance, strength, and muscular endurance; higher doses do not help and increase adverse effects.

Scientific society position stand · 1 source · 2 min

What the studies show

  • 3 to 6 mg/kg about 60 minutes before exercise is the most supported dose.
  • Doses above 9 mg/kg provide no additional benefit and increase side effects.
  • Caffeine late in the day impairs sleep, which negates the gain.

How Letz applies it

The coach only mentions caffeine for informational purposes and advises against its use when logged sleep is already short.

Who it applies to

Healthy adults habituated to caffeine.

Limits

Sleep, anxiety, and blood pressure may worsen; response varies with genetics and tolerance; not an individual recommendation.

Sources

More in Nutrition

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