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Glutamine represents 60% in muscles, and is the most important amino acid for muscle adaptation to physical activity.
ActivLab Stamina Booster is a combination of BCAAs, beta-alanine and arginine.
Leucine is the most important essential amino acid for humans, providing a positive nitrogen balance and is a powerful anabolic compound.
The simplest proteinogenic amino acid, which is used as a nootropic agent.