Research shows that up to 20% of Americans deal with chronic constipation. If you’re part of that no-sign-up-required club, you’ve probably tried some of the buzzier remedies—drinking coffee, eating ...

A person’s rectum, which is usually around 20 centimeters (cm) long, can hold up to 300 milliliters (mL) of feces before someone typically feels an urge to poop. However, research suggests that the ...