Ep. 71 - Jody Nelson: Why "Healthy" Habits Aren't Working: A Postpartum VO2 Max Case Study

Get A Demo: https://korr.com/contact/video-demo/

On this episode of Metabolic Mastery, hosts Dr. Marc Humbert and Dr. Cameron Garber are joined by Jody Nelson — KORR's resident metabolic testing expert with a decade of experience and a degree in exercise science — to break down a real client case study.

The client: an otherwise fit woman, 18 months postpartum, doing everything "right" — solid nutrition, consistent low-intensity walking — yet stuck in a frustrating weight loss plateau. Her VO2 max test revealed something unexpected: a surprisingly narrow fat-burning zone, a rapid heart rate spike when transitioning from walking to running, and a respiratory pattern that told a much bigger story than the numbers alone.

Marc, Cameron, and Jody walk through the respiratory rate and tidal volume graphs in real time, showing how early-test hyperventilation and anxiety can skew substrate utilization data — and why the device is almost never "wrong." They dig into the difference between being fit and being healthy, why perceived exertion is an unreliable guide, and how major hormonal shifts (postpartum, pregnancy, menopause) can scramble a client's ability to accurately read their own body.

You Will Learn:

• Why a narrow fat-burning zone doesn't always mean poor metabolic health — and what else could be going on
• How to read respiratory rate and tidal volume graphs to spot hyperventilation and test anxiety
• Why "the device is broken" is almost never the right conclusion when a test result looks unusual
• The critical difference between being cardiovascularly fit and being metabolically/physically healthy
• Why perceived exertion is an unreliable training guide and how heart rate data corrects it
• How hormonal changes during postpartum, pregnancy, and menopause affect metabolic test results
• Why testing what you intend to measure (and training for the adaptations you want) matters
• How to ask better follow-up questions instead of jumping to blood work or invasive testing
• Why "fit" doesn't always mean "healthy" — and what that means for injury risk and longevity