No hun, sitting in a reclined position does not cause diarrhea. (I read through most of the other questions you have asked.) If you are having issues with your intestines/bowels, you may want to see a doctor. Prolonged diarrhea can lead to dehydration, and unhealthy weightloss. So if you are having problems, make sure you drink plenty of fluids, and you may want to change your diet to something a little more bland to give your stomach a rest. If you are feeling poorly, I really hope you get to feeling better soon.