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Mike Regan Jr. Feb 23, 2026

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Zone 2 Training Is Not Easy Cardio: A Physiological Breakdown

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Dr. Mike Regan Jr.

Dr. Mike is a researcher, professor, and plant-based endurance athlete. He translates the complex science of human performance and longevity into daily, actionable protocols for fitness enthusiasts and endurance athletes alike. Follow the blog for evidence-based insights on training, nutrition, and sustainable recovery.

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