Jason Arntz — IFBB Pro. In The Keto Project (2025), the documentary about a fit doctor who ate 600 burgers in 30 days.
Jason Arntz is an IFBB Pro, and he tells us in The Keto Project that he has been in the health and fitness industry for 30-plus years: high school wrestling and football first, then bodybuilding from an early age.
Jason Arntz in The Keto Project
We asked Jason how much of a role nutrition plays in human performance. His answer is the clip on this page: diet and nutrition are probably 60 to 70 percent of the workload, and without them “you’re running in the dark.” Later in the film he says something a lot of people won’t like: most people who say they’re on keto are not on keto.
Watch Jason Arntz in the keto documentary
The Keto Project runs 1h 49m and is on Amazon to rent or buy. Watch The Keto Project on AmazonAs an Amazon Associate I earn from qualifying purchases.
More: every expert in The Keto Project · where to watch The Keto Project · what we tracked in Dr. Mike’s blood.
Jason Arntz on how much nutrition matters
Jason Arntz in The Keto Project, 36 seconds, captioned. Share it: vertical 9:16 · square 1:1.