The muscles of the intestine contribute to atonic constipation - sluggish or flaccid muscles in the bowel or rectum, or spasticity - increased muscle tone due to emotional stress. These two factors are both present in patients with CFC. Bowel movement depends on the interlinked functions of abdominal muscles, the pelvic floor and diaphragmatic breathing: contraction of the diaphragm, abdominal distention resulting from the voluntary relaxation of the abdominal wall and the pelvic floor lead to increased intra-abdominal and peristaltic pressure and relaxation of the external anal sphincter (EAS), thus culminating in bowel movement. Added to which, activity of the parasympathetic autonomic nervous system causes an increase in gastrointestinal motility and relaxation of the sphincters. The superficial and deep abdominal muscles, in addition to the diaphragm and muscles of the pelvic floor, form a single muscle unit that assists regular bowel movement, and should all be worked together in order to stimulate peristalsis. Therefore, a combination of exercises that stimulate and relax the abdominal muscles, indirectly acting on the pelvic floor, coordinated with diaphragmatic breathing, may trigger contraction of the intestinal and rectal muscles, therefore bringing relief to patients with CFC.