and thats when youve hit the wall. You can take steps to avoid this by topping up your fuel supplies with an energy bar or a carbohydrate drink during a race, or more specifically targeting your training to a particular race. Also, start your long runs
high sprinting speed and also a high degree of lactate tolerance. You can’t sprint flat out for much over 200m, because the energy comes entirely from anaerobic sources and there’s a limit to how much blood lactate the muscles can stand before
