Any uneaten food items will be recorded. Water will be provided ad libitum. Metabolic Studies for Fractional Synthesis Rate of Muscle Protein (Night before, t=2, t=5, t=6 t=7) At night subjects will be given a standardized dinner, and allowed only ad libitum water thereafter. The next morning, fasting anthropometric indices (height, weight, leg volume) will be recorded. The subject will then undergo a stable isotopic study to measure muscle protein turnover.