The Human Lab Rats Injecting Themselves with Peptides Office for Science and Society McGill University The reason athletes have become interested in peptides is that they serve as signaling molecules. Instead of taking, say, human growth hormone, you can take a peptide that tells your body to Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance Sports Medicine Springer Nature Link Sermorelin vs CJC 1295 Ipamorelin: Why Modern Medical Clinics Have Moved to the Stack Perfect B