What happens when one of the world’s leading metabolic and respiratory specialists reveals why your ability to use oxygen may be the most powerful predictor of longevity, performance, and healthy aging?

In this episode of Becoming Limitless, Dr. Elie sits down with Gilles Essiembre, metabolic and respiratory specialist, founder of O2Max, ultra-endurance athlete, and educator, to explore the science behind VO₂ max, metabolic health, breathing efficiency, and the critical role oxygen plays in extending both healthspan and lifespan.

Together, they unpack what VO₂ max really measures and why it’s far more than a fitness metric. Gilles explains how your lungs, heart, muscles, mitochondria, and breathing patterns all contribute to your body’s ability to utilize oxygen efficiently, making VO₂ max one of the strongest indicators of overall he ...