
It starts at 30 — 3–8% per decade.
Workouts you used to breeze through now linger, and tone takes twice the effort it did at 25.
Research shows muscle mass starts declining around age 30, at 3–8% per decade — and it accelerates later. Muscle drives your metabolism, strength, and steady energy. Paired with movement, Aphia’s full 5g of creatine a day helps you hold the line early. No crisis, no overhaul. Just a head start your future decades get to keep.






