If you’re running for over an hour, refuelling during your event is a necessity. “Our bodies can only store a certain amount of glycogen,” says sports nutritionist Liam Holmes. “You will need to provide this fuel in order to maximise your performance.”  Enter the world of energy drinks, gels, chews, bars and snacks, all sources of carbohydrate. Used in the right way, these will replenish your body and power you to the finish line ensuring you don’t hit the dreaded “wall”.

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