Collagen supplements are the perfect protein to consume before and after exercise, helping to maintain and restore the protein content of muscle. Collagen peptides, which consists of 20% glycine and 8% arginine, may help the synthesis of creatine in the body. Creatine has been shown to help improve performance during short periods of exercise, thus helping athletes to increase their body mass and reduce body fat percentage.  Creatine is made of three amino-acids, glycine, arginine, and methionine. Each serving of Vital Protein’s Collagen Peptides contains of Glycine, of Arginine, and 120mg of methionine.