Approximate data extracted and redrawn from Abou Sawan et al. [85], 20211 and Hermans et al. [82], 20222 displaying the approximate increase in postprandial leucine concentrations (left) and postprandial muscle protein synthesis rates (right), following the ingestion of 2 different “mixed-meals” (chilli1 and a breakfast of a croissant, butter, and orange juice2), a whole-food (boiled eggs2), and a refined protein source (whey protein1). FSR, fractional synthetic rate.