Your brain is only 2% of your body weight but burns 20% of your total energy. It runs on the same phosphocreatine system your muscles do - and creatine supplementation increases those stores in both.

Your muscles store creatine to produce energy during hard efforts. Your brain does the same thing. Creatine helps your brain generate energy during demanding mental work - focus, memory, and staying sharp under pressure - the same way it helps your legs push through a heavy set.

Most people take creatine for the gym. The ones who know the full story take it for everything.