Bio: Chris Duffin is a freakishly strong, crazy engineer, who likes testing the limits of physicality, intellect, and creativity.

Bio: I'm Dr. Adam Hotchkiss foot and ankle surgeon by training and human optimization specialist by passion (and self experimentation).

Bio: Luke

Bio: Looking to learn

Bio: Queen of men's health

Bio: Medical Physiology BSc

Bio: Health coach, best selling author, speaker & educator on TRT.