About
Ben Greenfield (born December 20, 1981) is a triathlete, personal trainer, nutritionist, author, public speaker, and former bodybuilder known for the practice of biohacking. He has participated in 13 Ironman competitions and over 120 races, becoming a USA Triathlon top-ranked athlete in his age group for a period of time.
Videos

The 4 Hidden Reasons You Can't Lose Weight.
2026

BEDRIDDEN AT 26: How Food Reversed Her Autoimmune Disease
2026

The 4 Hidden Reasons You Can't Lose Weight.
2026

Why Your Wounds Take So Long to Heal (And What Actually Fixes It)
2026

Microplastics, Seed Oils, Bad Posture & Why You're Still Sick Despite Doing Everything Right
2026

Mark Sisson: Forget VO2 Max — This Is What Peak Health Actually Looks Like at 72
2026

Why "Healthy" People Are Toxic: EMFs, Body Burden & the Detox Protocol That Actually Works
2026

I Tested Every Sleep Hack on the Planet — Here's What Actually Works
2026

Most people are wrong about how little sleep they can get away with
2026

The Smarter Way To Build Muscle (Backed By Science)
2026
