Does exercise make you poop?
Eventually, if you keep at it. Regular exercise speeds things through your colon over weeks. In a trial of inactive adults with constipation, their colon transit time dropped by about a quarter.
Did exercise make you go?
The meter says what should happen. Your bowels get a vote too.
Why it works
It sped up the colon in a trial
Inactive middle-aged adults with chronic constipation who took up regular exercise saw their total colon transit time fall from about 79 to 58 hours, and the last stretch from about 17.5 to 9.6 hours.
Fewer constipation symptoms too
In the same trial, people met fewer of the standard criteria for constipation afterwards, even though their fiber and fluid intake didn't change.
Hard sessions can go either way
Some studies link moderate exercise to less constipation, while hard, intense sessions can bring on cramps and diarrhea, or constipation. Not every exercise trial found a clear effect.
Sources: De Schryver et al., Scand J Gastroenterol 2005; Song et al., J Exerc Sci Fit 2021.