This is Proven Science Nutrition’s evidence-based blog for everyday gym-goers and elite athletes. We provide clear, practical, and clinically-backed advice.
What Is Creatine? Creatine is a naturally occurring compound found mainly in muscle cells. It is made from amino acids—arginine, glycine, and methionine—and stored as phosphocreatine. The body produces about 1 to 2 grams of creatine daily. It can also be obtained through foods like red meat and fish or supplements. Phosphocreatine serves as a quick energy reserve for cells, especially during short bursts of high-intensity activity. This energy system is crucial for activities
