Originally Posted by
grebletie
Actually, you shouldn't run out of gas. If you ate well the night before, then muscle glycogen stores will be fine in the morning.
Something light ought to do the trick. Do your workout, then eat your breakfast.
I do all of my summer riding and winter working-out in the morning without eating anything before the ride, just cramming the carbs the night before and staying hydrated. I haven't bonked yet, but now that I've said that I'll probably bonk tomorrow.