Creatine is your body's instant energy system. Every lift, sprint and burst of effort draws on the phosphocreatine stored in your muscles - and your brain, one of the hungriest organs you own, runs on the very same fuel. The catch: your body only makes around 1g a day, food adds roughly another 1g (almost all from meat and fish), and most people's stores sit well below full - especially women and anyone who eats little meat.
Topping up with 5g a day is one of the most researched moves in all of nutrition - over 1,000 studies across 30+ years - supporting performance in short bursts of intense effort and, alongside training, the strength and muscle you would otherwise slowly lose from your 30s onwards. This is not a bodybuilder's powder. It is a daily top-up of something you already run on.
~2g
All your body makes and eats in a typical day - the studied dose is 5g
3-8%
Muscle naturally lost per decade from your 30s
95%
Of your creatine is stored in muscle - the rest fuels your brain