1. A palatable, orally ingestible nutrient composition for athletes, comprising: electrolytes, carbohydrates, nutrient factors, and free amino acids, wherein the amino acids, expressed as an approximate weight percent of total free amino acids, comprise: TBL ______________________________________ L-Isoleucine 15.50% .+-. 2% L-Leucine 16.00% .+-. 2% L-Valine 10.69% .+-. 2% L-Lysine 13.92% .+-. 2% L-Methionine 2.10% .+-. 1% L-Phenylalanine 0.41% .+-. 0.2% L-Threonine 2.90% .+-. 1.5% L-Tryptophan 1.02% .+-. 0.5% L-Alanine 9.30% .+-. 2% L-Arginine 8.22% .+-. 2% L-Aspartic Acid 0.32% .+-. 0.15% Aminoacetic Acid 3.91% .+-. 1.8% L-Histidine 4.02% .+-. 2% L-Proline 8.38% .+-. 2% L-Serine 2.39% .+-. 1% L-Tyrosine 0.47% .+-. 0.2% L-Cysteine 0.45% .+-. 0.2%. ______________________________________