Published: 29.01.2026
1 min read
In Short
Because the rectum empties more easily in a certain body position. It isn’t required, but it takes pressure off.
What We’ve Been Sold as Normal
That you just sit down, strain, and you’re done. That posture is beside the point. And that straining is part of it when things don’t work right away.
The Honest Explanation
When you sit upright, the anorectal angle stays kinked. The sphincter doesn’t relax completely. Stool has to pass against resistance. A slightly raised foot position changes the angle, reduces muscle tension, and allows emptying without pushing. The bowel follows anatomy, not habit.
What You Often Hear – and What’s True
“The body sorts that out on its own.”
It can only work with the right mechanics.
“Straining is normal.”
Light abdominal pressure is normal. Hard straining is often a workaround for an unfavorable posture.
“It doesn’t make much difference.”
The angle decides between resistance and passage.
“It only affects people with constipation.”
Even with regular bowel movements, some residual pressure often remains.
Putting It in Context
Your sitting posture determines whether emptying is efficient or a strain. Ignore posture, and you force the body to compensate.
If you regularly have to strain hard despite a good posture, never feel empty, or notice blood, get it checked by a doctor.