What happens if you run after you eat?

Well first it depends on what u ate and how fast you ate it. For example: If you ate say a Big Mac and you go running you won't have alot of energy and calories you need to burn. It is possible if you run it will shake your whole stomach center and possibly upchuck. That is why you need at least to wait 45 min or longer so your stomach will digest the food you ate.;)