Feel great before bm. After bm, extreme weakness in legs and feel tired. After little over an hour feel ok. Have high risk of colon cancer (death of brother, 2 uncle's, cousin, grandfather) and I am on top of keeping up with tests as I keep having the polyps removed each colonoscopy. I also have lower back pain every day due to two buldgeing disks. I have other back and limb issues such as scoliosis, stenosis, pressure palsies and drop feet (HNPP). There are some respiratory issues that I believe are irrelevant to the bm/weakness problem. What is your opinion to the extreme weakness in legs after bm?