HMB (beta‑hydroxy‑beta‑methylbutyrate) is a compound your body makes when it breaks down leucine—a key amino acid found in protein-rich foods like meat, fish, yogurt, and soy. But here's the thing: your body only turns about 5 % of dietary leucine into HMB, which makes it tough to get enough from food alone. 

Keeps muscles in balance – it helps maintain protein-building activity while slowing breakdown. 

Helps preserve strength as we age – clinical reviews show it supports lean muscle and strength, especially in older adults. 

Supports active recovery – HMB may reduce exercise-related muscle damage and help you bounce back more comfortably.