Yoga Nidra & Joint Repair: Beyond Sleep: The Neuro-Endocrine Science of Yoga Nidra for the 50+ Marathoner
Yoga Nidra & Joint Repair: Beyond Sleep: The Neuro-Endocrine Science of Yoga Nidra for the 50+ Marathoner The Biological 'Recovery Gap' in Master Athletes As we cross the age of 50, the physiological cost of doing business on the pavement increases exponentially. For the master marathoner, the primary barrier to performance is no longer aerobic capacity or muscular strength — it is the Recovery Gap. In our 20s and 30s, the body exists in a state of high anabolic resilience. Post-run inflammation is cleared quickly by a robust lymphatic system. Muscle protein synthesis peaks within hours, and joints receive a steady supply of synovial fluid, enriched with chondrocyte-stimulating growth factors. However, by the half-century mark, our HPA-axis (Hypothalamic-Pituitary-Adrenal) becomes hyper-sensitized. Even a moderate Zone 2 run can trigger a cortisol spike that lingers for 6–8 hours, disrupting the natural circadian rhythm and preventing the deep, slow-wave s...