I may not drink an electrolyte beverage during the race. If I am running in an hour, I won't need one. But if you're running an hour-and-a-half to two hours or more, maybe you need a little bit of the electrolytes.
“I don't feel any pressure to lose weight - and in any case, if I didn't have my food I'd be a nasty piece of work and wouldn't be able to function.”