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For athletes, arginine AKG is beneficial because it helps to increase the growth of muscles and increases the dilation of blood vessels. If you exercise regularly and have more blood flowing to your muscles, your muscles will look bigger.
L-arginine helps your body regulate its waste and certain chemical balances. L-arginine helps your body manufacture creatine, a protein that contributes to muscle mass and power. L-arginine also helps the body get rid of creatinine, the waste product associated with this process [source: Mayo Clinic ].-arginine helps your body regulate its waste and certain chemical balances. L-arginine helps your body manufacture creatine, a protein that contributes to muscle mass and power. L-arginine also helps the body get rid of creatinine, the waste product associated with this process [source: Mayo Clinic ].