I have found that doing hard work in the house, garden or exercise will tighten all the gut muscles in a knot. I do some simple yoga moves, twists and inversions to help relax them. That works for me. Don't stop exercising, just do some things to relax the gut muscles. I've been doing a new workout called T-Tapp and find I really like it but my gut is more rounded than it has been. New muscle, I hope. I do find taking a couple of days off of exercise calms that down so there must be some sort of inflamation going on outside of the attack type reactions.
-------------------- Catnut IBS-C for many years, finally diagnosed in 2005. Wheat and dairy sensative.