/fit/, here's a question I've had for a while that maybe you guys can answer.When I don't eat for about 5 hours or so and go jog or lift weights I feel sluggish as hell. When I eat an hour or less beforehand I feel full of energy.How can the body pull energy out of the food so fast? Shouldn't it still be half-digested mush at that point?
Some foods can be converted into glycogen very quickly, some less-so. Stuff like fats won't help you feel any better in an hour but fruits and sugars will give you plenty of energy quickly.