The human body is made for the movement of waste products from an upright position due to gravity so being in an upright position moves the contents downward. If you have an upright posture this will create more space for the intestine to move in the
chest and abdomen. This space will create better digestion and movement of the bowels and will help relieve constipation. Even if your movement is limited just getting up and moving will get your system working. If you can adding dynamic activities will
improve your bowel movements and help eliminate constipation. Drinking plenty of water keeps the bowels lubricated and eating the proper foods help.
http://sportstraininghelp.com/bowels.htm
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