Does workout make you poop more? Moving your body up and down can stir up your digestive system, causing you to have to go to the bathroom more often. You may also experience cramping, gas, and acid reflux. This happens partly because your blood flow is redirected to your legs instead of your digestive system.
Why do I have to poop during exercise? Added to this, the bowel needs a good blood supply to work normally but when you’re exercising, your muscles take priority, so blood is diverted away from your bowel, affecting its function. As you run your bowel jiggles around, which irritates it and makes it want to expel its contents.