I think that in a normal bowel movement you basically let go and the colon takes care of the rest. I also think it is normal to have to push, just a little, but straining isn't.I don't know if biofeedback techniques would help to retrain things so you can go without excessive straining and pushing, but it might be something to investigate.It may also be possible to retrain yourself to go. Part of that may mean living with the feeling of incomplete evacuation. In IBS your gut nerves may be lieing to you, and what they are reporting is not really occuring. Most things I read say you should not stay on the toilet for more than 15 minutes at a time. What you want to do is get your body and it's nerves to associate the toilet with peeing and pooping. Do not do other things on the toilet (this is like when you are retraining your body to sleep in the bed, you only used the bed for sleeping (well sex is OK) so that you train your body to associate the bed with sleep).After 15 minutes, get up, walk around do other things for awhile before trying again.Walking and some yoga and Tai Chi exercises seem to be good at moving things along, and you might try some abdominal massage prior to trying again (up the right across and down the left). When I am having difficulties I will do a thing I learned in Tai Chi which is to squat. Feet on the floor, and butt against the calfs. Feet spread at shoulder width (some people have to put something under their heels if the calf muscles are too tight). You can rock back and forth, front and back, and it seems to move things along. I've also been known to perch in that position on the toilet. The sitting position we use is not the best for helping the colon do its thing. If you are not graceful enough to do this on the toilet, you can get a shallow pan and then dump it out.K.