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Well, there’s a reason for that: it turns out your toilet habits are significantly effected by how active you are.
In a 2011 study published in the Scandinavian Journal of Gastroenterology, Swedish researchers looked into the ‘gastrointestinal characteristics’ (read: poo movements) of a group of 15 elite athletes during a week of intense training, compared to a week of rest.
During the heavy training week, they found participants had a higher number of bowel movements, increasing from 1.3 during rest week to 1.5 a day when they were training.
Using the Bristol Stool Form Scale, a measure of poo consistency from one to seven — seven being the most watery — the athletes also recorded looser stools, with an average rating of 4.2 compared to 3.9 during the rest week.
While there is no doubt exercise affects your bowels, exactly how it does depends on the degree of exertion and type of exercise you do. (Post continues after gallery.)