I usually get up at 4 am, grab a boomi bar, it's a small fruit and nut bar, some water, chase the cat around for a few minutes, so he'll stay out from under my feet when I'm doing weights or cardio, as I don't want to kick him or smack him with a dumbbell, as he likes to be in the way. I change into my workout clothes and I'm set, I've found that a light bit of food really helps my workout, but I can't eat a whole bowl of ceral, then I'd have to wait 30 minutes or so, before starting if I was to do cardio. t
If your awake alert, and feeling energetic, just make sure you let your food settle before doing your workout and you should be fine. The main thing is not to strain your stomache with something heavy or doing too much right after eating.
Kit