Zone 2 Cardio vs. High-Intensity Training: What Science Says About Living Longer and Aging Better

The longevity debate surrounding exercise physiology has focused on two primary modalities: low-intensity Zone 2 aerobic conditioning and High-Intensity Interval Training (HIIT). While fitness trends often pit these modalities against one another, exercise science reveals that optimizing healthspan requires understanding their distinct cellular mechanisms and incorporating both into a balanced routine.