Creatine: The Good, The Bad, and The Bulked-up

Creatine is an amino acid that is found mostly in your body's muscles as well as in your brain. Many know the role amino acids play in protein synthesis, but limitations in the ability to transport and/or store creatine can impair metabolism. Increasing the availability of creatine in tissue may enhance cellular metabolism and thereby lessen the severity of injury and/or disease conditions, particularly when oxygen availability is compromised, like during high-intensity exercise.