There's a certain point where optimization starts looking a lot like experimentation. And peptides are drifting into that territory fast. Right now, social media is flooded with conversations about BPC 157, TB 500, and BPC 157: Experimental Peptide Creates Risk for Athletes The Science Behind BPC 157 BPC 157, often called the "Body Protection Compound," is a synthetic peptide based on a protein naturally found in human gastric juice. It has gained significant attention in PDF) Emerging Use of BPC 157 in Orthopaedic Sports Medicine: A Systematic Review