Your body needs fuel to provide you with energy to endure tough days and tough conditions. An excellent source of readily available fuel comes in the form of complex carbohydrates.
Maltodextrin is one such carbohydrate. You could just give your body some sugar, but that kind of fuel burns off quickly and it often leads to upset stomach which, at its worst, will cause you to purge and eliminate the fluids and nutrients you vitally need. Maltodextrin is commonly found in energy drinks and particularly those products designed specifically for prolonged exercise [source: Hammer Nutrition].