Women's Health talked to Kenneth Koch, M.D.,who explained that this is because while you're sleeping, your colon and small intestine are working hard to process the food you ate the day before. So when you wake up, it's all rarin' to go.
Ultimately, if you're pooping at around the same time every time, you're still making your body happy. Metro reports, "If you fail to uphold your pooping schedule, you're not only more likely to have a surprise need to poo at an impractical time — you'll also end up feeling gassy and bloated."
The key is to listen to your body and to not procrastinate. Dr. Koch explains, "You can think of 100 reasons you don't have time, but have that breakfast, recognize that urge to have a bowel movement, and then take the time. That's how you get into a regular movement."