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Science · 7 min read · 18 August 2026

Creatine isn't just for lifters

The most researched supplement in sport has a second life in endurance, cognition and healthy ageing.

Creatine has been studied in hundreds of trials since the early 1990s. The core finding hasn't moved: about 3–5 g a day tops up muscle phosphocreatine and lets you do more work in repeated hard efforts.

Endurance athletes

Endurance events are decided by surges: the climb, the break, the sprint. Creatine supports repeated high-intensity bursts and may help glycogen storage when taken with carbohydrate. The water gain is typically 0.5–1.5 kg. For most road and trail athletes, that trade-off is favourable.

Your brain runs on it too

The brain uses around a fifth of your energy, and creatine buffers that supply. Meta-analyses from 2018 and 2024 report small improvements in memory, with larger effects under stress, sleep loss, and in older adults.

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