When you eat and then barf four or five hours later there is often food still in your stomach. Sometimes the food doesn't look like it's been digested much. If you eat an hour before your workout why do you need to "re-fuel"-eat immediately after a workout if there is still food in your stomach being broken down and absorbed? I know that certain intense exercises slow or stop digestion, but doesn't it begin again? Does it have something to do with the hormones that are triggered by eating? As far as mechanical supply of nutrients you should have fuel already going to your liver and muscles from the food you ate before a workout. So I'm having a hard time buying the argument that you have to refuel your muscles immediately after a workout to aid in recovery time. I'm confused as to why there's so much literature on eating immediately after a workout. Is glucose broken down fastest and therefore not present in what remains in your stomach hours later? And no one I see with big arms or who is broly has a flat stomach, but that's a whole different thread.