Peptides are growing in popularity in the bodybuilding and fitness world. Much like SARMs before them, peptides are seen as a possible alternative to steroid use. However, peptides are a very different substance than SARMs. It seems more and more bodybuilders are speaking out about using peptides – but is taking these substances consider natural? In Generation Iron and Barbend’s latest episode of The Mike O’Hearn Show, Clark Bartram explains why he doesn’t use peptides and whether or not he considers them natural.