Beyond the Basics with Physiologic Flexibility: Certification Course is Now Open

In this episode of the Flex Diet Podcast, I break down why I built the Physiologic Flexibility Certification (PhysFlex) as a “level two” continuation after you’ve already got the basics of nutrition, training, and recovery mostly dialed in.  I explain how Phys Flex targets four overlapping homeostatic regulators—temperature (heat/cold exposure), pH (acidity/alkalinity shifts), expanded fuels (ketones and lactate), and oxygen/CO2 regulation (breathing)—and why taking a systems view matters more than treating everything in silos. I share examples of how these pillars can become the real limiter in recovery and performance, including high-intensity work, long-duration events, and signs like elevated overnight respiration rate. Enrollment is open from Monday, October 12 through midnight PST Monday, October 19, 2026, and I’m offering direct email access for questions.Enroll here: https://physiologic.miketnelson.com/salesEpisode Timestamps:00:00 Welcome and Podcast Focus00:19 Course Enrollment Window01:44 Who This Certification Is For02:48 Why Four Pillars Together03:41 The Four Homeostatic Pillars05:05 Systems Thinking Over Silos08:07 Applying the Framework to Recovery11:41 Course Structure and Interventions13:09 Support, Email Access, Next Guest13:58 Medical Disclaimer and Closing Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter