Sit or squat? It's one of the oldest debates in digestive health, and unlike most wellness arguments, this one has some fascinating preliminary science behind it. The claim is that squatting, or just propping your feet on a small stool, helps you poop more easily and with less straining. It appears to help many people, although the evidence is still limited, and the reason comes down to a single muscle and the angle it creates.

If bathroom trips have felt like more of a project than they should, this may be why. Most of us were simply never told that a standard toilet can work against our own anatomy. Let's walk you through what's actually going on, and what you can do about it.

The little muscle nobody tells you about

There's a muscle called the puborectalis that loops around your rectum like a sling. It gently pulls the rectum forward and creates a bend where the rectum meets the anal canal. Doctors call that bend the anorectal angle, and it's not a defect. It's there to keep you in control, holding everything in place until you decide it's time. It works a lot like a kink in a garden hose: the bend holds back the flow until you’re ready for it.

The trouble shows up when you sit upright on a standard toilet. In that position, the muscle stays partly tightened, so the bend stays put. You end up pushing stool along a path that's still partly folded, which is exactly why sitting can take more effort.

Raising your knees can help relax the puborectalis and open the anorectal angle, giving stool a straighter path. 

What the research says

The anatomy is backed by real, if still limited, evidence. In one study, 28 healthy adults each tried all three positions over six bowel movements apiece, and squatting sharply reduced both the time it took to feel fully emptied and how hard they felt they had to strain, compared with either sitting posture. The effect showed up in every volunteer and was highly statistically significant.

A more everyday version comes from a 2019 trial where people used a simple footstool for four weeks: about 90% said they strained less, roughly 70% found their trips quicker, and about two-thirds planned to keep using it. You don't need to renovate anything or install a special toilet. A footstool gives you some of the same postural benefit without changing the toilet itself.

These are small studies, so this sits in the "promising and anatomically sound" column rather than "proven beyond doubt." For most people it's inexpensive and low-risk, provided the stool is stable and the position feels comfortable.