Posted: 28/03/2014 at 09:32
I'm with everyone else here, it sounds like awful and potentially dangerous advice! Carb load in the days leading up to it and have a good breakfast like porridge on the day, only use the supplements/food you have been training with. I would also suggest that most personal trainers are not experienced distance runners (neither am I, only done 1 marathon and a couple of halves, but I listen to those who are!) and therefore don't necessarily have the most up to date information about our sport. I'm with RunningMax and avoid caffeine on long runs/training sessions as it just seems like "fake energy" to me.