I follow a pretty intense core/abs workout since 15 days and I have diarrhea since 12-13 days, can it be linked? I mean, does such kind of workout compress so much the bowel that it 'liquify' its 'production'? If so, does it get back to a normal when the core is sufficiently strong? (I have a weak core)

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    No, it can't.. if you have diarreah your diet is unhealthy. – Ekaen Apr 17 '18 at 5:40
  • I always have loose stools after an intense ab workout. I wouldn't say diarrhea but definitely not normal. Here's why... healthline.com/health/exercise-fitness/… – tink Jan 21 at 16:45

No. Diarrhea is a symptom of what's going on inside your stomach. Your abdominal muscles are outside, and don't have any effect on your digestive system.

If you have a problem with diarrhea, you should take a second look at what you're eating, as a poor diet is the number one cause of diarrhea.

If you're certain that it's not the diet, see a doctor. You could have an infection like gastroenteritis, which is very annoying and also very contagious.

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  • Wouldn’t it stand to reason that an intense ab (or cardio) workout could aggravate the digestive system and produce effects such as diarrhea? “Runners Diarrhea” comes to mind. – JustSnilloc Apr 17 '18 at 13:35
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    @JustSnilloc - No one really knows why runner's diarrhea occurs, but the first suspect is jostling of the stomach. As for ab workouts, this doesn't really do that. You're probably thinking that the ab muscles would "knead" on the stomach, but a) that is extremely minimal and b) it wouldn't disrupt digestion. This is because food is digested by way of stomach acid. – Alec Apr 17 '18 at 16:08

Certain types of exercise cause food to pass through your digestive tract faster than normal. ... It often occurs during or after intense forms of exercise such as running, weightlifting, and cycling. Though it's not convenient, diarrhea connected to working out is relatively normal and usually isn't a cause for concern.

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