How to Lose Fat While Protecting Muscle
The key is muscle protein synthesis (MPS) — your body's signal to build and repair muscle.
When you're eating enough, MPS keeps up with muscle breakdown. But in a calorie deficit, breakdown wins.
Unless you give your body a stronger signal.
That signal is leucine — the amino acid that triggers MPS by activating the mTOR pathway.
Research shows that during calorie restriction, leucine-enriched essential amino acids can help preserve lean mass — even when your body is burning fat for fuel.
The problem: After 40, you need more leucine to trigger MPS. And most protein sources can't deliver enough, fast enough — especially when you're eating less overall.
The solution:Â A leucine-enriched EAA formula designed to cross the threshold and protect your muscle while you cut.