Probably the most important sports nutrition supplement after protein is glutamine. This is a special amino acid that is involved in various processes of building, developing and restoring muscle mass.

Glutamine in sports nutrition
Glutamine is the favorite amino acid of bodybuilders and bodybuilders. Thanks to it, the body quickly recovers after hard training. This is the most important substance that the body needs after physical stress, which athletes often experience. In addition, this amino acid, which can be produced by the body itself, is involved in the functioning of the immune system. Glutamine plays an important role in the normal functioning of the kidneys, gonads and pancreas.
Why Glutamine Deficiency Occurs During Stress
The bulk of this amino acid enters our body with food. Therefore, most of the glutamine remains in the intestinal cells. With increased loads, a deficiency of this amino acid occurs. The body begins to take glutamine from the muscles or other amino acids, breaking them down. Thus, the muscles are destroyed, and you have to sacrifice your muscles.
On a note:
Then, trying to build muscle again, the same thing happens. The effect of bodybuilding would be reduced to zero if the body itself had not synthesized the amino acid. But he does not have time to develop it enough to restore muscle mass. That is why glutamine is included in sports nutrition. Glutamine, as a useful supplement, is consumed by many athletes.
Scientific research
Numerous studies conducted by leading physicians confirm the usefulness of this amino acid. About 2-3 g of glutamine before training increases the level of this amino acid in the muscles.

In addition to capsules and powder, athletes are advised to consume more whey, as it contains a lot of glutamine.