“Okay, I have an hour and a half before my run. What should I eat for breakfast? Small bowl of leftover oatmeal with raisins and peanut butter and honey? Or slightly larger bowl of cereal with milk that we should use up soon? Pah, small bowl of leftover oatmeal with raisins and peanut butter and honey won’t be enough food! Cereal it is!!”
Because nothing says easy-on-a-pre-run-stomach like unpasturized milk that will be bad tomorrow.