New research identifies a muscle protein called NOX4 that declines with age and inactivity, potentially explaining why exercise keeps people stronger.
https://www.foxnews.com/health/one-muscle-protein-may-hold-key-staying-stronger-you-age-study-finds
https://www.foxnews.com/health/one-muscle-protein-may-hold-key-staying-stronger-you-age-study-finds