Did you know that a stomach can twist upon itself, cutting off the esophagus and requiring immediate emergency surgery in order to stay alive?
Say what?
I sure didn't, and when I learned that it was the large members of Canis Familiares (aka Muffin and Fluffy) that really had to fear this terrifying predicament, and not you, Homo Sapiens, I was slightly mollified, but not by much. It turns out that mans best friend is in greatest danger from this when they are taken out to exercise right after eating.
Point of this: DON'T EXERCISE. IT KILLS. GO HUG YOUR PUP. NOW.