Muscle is not built and left — it's demolished and rebuilt continuously, and the net direction of that turnover decides whether you're gaining or losing. Protein supplies the bricks, but the story has a second half most people miss: the trigger. A per-meal threshold switches muscle-building on, and it takes more protein to press that switch after 40 than it did at 20. This guided journey covers the turnover, the trigger, and the myth that wasted a decade of gym-bag anxiety.
3 quick steps~2 minutesEvidence-awareHealth info, not a diagnosis