THIS is why CrossFit Slows Aging With Dr. Jose Ostaiza (Hint: Epigenetics)
About this episode
Dr. Jose Ostaiza discusses how CrossFit influences aging through epigenetics and high-intensity training.
When CrossFit started, we didn’t need science to know it worked. We saw it in affiliates every day. People moved better, got stronger, and aged better. Now, the research is catching up. In this episode, physician, CrossFit Level 3 trainer, and researcher Jose Ostaiza explains how CrossFit changes the body at the molecular level through epigenetics, the science of how lifestyle influences gene expression. Ostaiza breaks down how high-intensity training rebuilds telomeres, supports mitochondrial health, reduces inflammation, and slows biological aging. By combining strength, cardio, and high-intensity work, CrossFit produces deeper and broader adaptations than single-mode fitness. This conversation offers a look inside the black box and explains why CrossFit is not just effective, but uniquely powerful for long-term health and longevity. Topics Covered Epigenetics and how lifestyle controls gene expression Why high-intensity training drives change at the DNA level Biological age versus chronological age Exercise, nutrition, stress, sleep, and social connection as longevity tools Bridging medicine, research, and the CrossFit affiliate Community Highlight Tony Espejo spent 21 years…
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