Peter Attia, M.D. — Fasting, Metformin, Athletic Performance, and More | Brought to you by HumanN's BeetElite and Peloton. Dr. Peter Attia (peterattiamd.com, TW: @PeterAttiaMD, IG: @peterattiamd, FB: @peterattiamd) is a former ultra-endurance athlete (e.g., swimming races of 25 miles), a compulsive self-experimenter, and one of the most fascinating human beings I know. He is one of my go-to doctors for anything performance or longevity-related. He is also easily the best quarterback and sherpa for the US medical system I've ever met. But here is his official bio to do him justice: Peter is the founder of Attia Medical, PC, a medical practice with offices in San Diego and New York City, focusing on the applied science of longevity.The practice applies nutritional biochemistry, exercise physiology, sleep physiology, techniques to increase distress tolerance, lipidology, pharmacology, and four-system endocrinology to increase lifespan (delaying the onset of chronic disease), while sim...