High 5 energy source 41 super carbs 16kg is an advanced fuel for use during exercise it contains 4 parts carbohydrate to 1 part protein research shows that this ratio can provide endurance athletes with more energy than carbohydrate alone and that protein protects muscles from being broken down and used as fuel during endurance training and competition energy source 41 contains high 5s unique high electrolyte anti cramping formula which is designed to maximise fluid uptake and minimise