Ultimate Nutrition Creatine Monohydrate 300gm Creatine  (300 g, Unflavored)

During Long-Term And Sustained Exercise, However, Muscles Use Large Amounts Of Amino Acids As A Source For Energy. The Body Prefers To Use Bcaas For Energy, Since They Readily Replace Glucose In The Energy Production Pathways. As Muscles Begin To Use Bcaas, The Amounts Of These Amino Acids Drop, Which Allows Tryptophan To Enter The Brain, Inducing Fatigue And Tiredness. Research Shows That Supplementation With Branched-Chain Amino Acids Can Prevent Central Fatigue By Tightly Regulating The Influx Of Tryptophan To The Brain.