If this helps, I've been getting good results by drinking some mid-high gi juice along with a little whey about 20-30 mins before working out in addition to sucking down a pw shake w/dextrose and maltodextrin. I've read that it helps prevent catabolism while working out and gives your muscles fuel for an intense workout. I obviously just wouldnt eat/drink too much (to avoid feeling queasy/vomiting)