Creatine is a supplement that many fitness trainers take to increase the productivity of their workout and training sessions. This is actually a natural supplement that is found in most meats and exists in our bodies. Any meat that you consume will have this substance in it. In our bodies it exists as an amino acid, which is produced by the liver and kidneys. After it is produced, it is stored in muscle tissue and fat until it is needed. The body generally only uses significant portions of this amino acid to give bursts of energy for activities such as high endurance training, extreme workouts, or long distance running. Here we are going to discuss the fitness benefits of using creatine.