Simple Amino acids 

Straight or otherwise endogenous amino acids are such amino acids that can be formed in the process of metabolism from other amino acids and nutrients from food. These include: alanine, arginine, aspargine, cysteine, glycine, glutamine, aspartic acid, glutamic acid, proline, serine and tyrosine. To get the maximum assimilation, simple amino acids should be consumed at times of greatest demand by the body before eating or during, immediately after training and before going to sleep.