EnergySource 4:1 is a 'state of the art' sports fuel for use during exercise and to help muscles recover after exercise. EnergySource 4:1 combines a special mix of 4 parts complex carbohydrate to 1 part whey protein.Research shows that this ratio drives more energy into working muscles, providing athletes with a 24% -29% increase in endurance over carbohydrate only drinks and a 57% increase in endurance over water.
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