I used to exercise regularly weights and cycling before I became ill, I had a 3 stage op and have had a pouch since 2007. I got back into the gym a year after, I started a bit to soon and have hernia in my groin but it's not an issue. I always wanted to run a marathon so I trained myself, it was part of my journey post op dealing with the depression I had. I ran my first marathon in 2011, I have gone on to run many ultra marathon's and quite a few 100 milers. Exercise has been the key ingredient for me and I feel the reason why I have had no problems. It's not been easy it's trail and error and listen to your body. It's been frustrating at times but keep at it. My out generally stays the same after exercise, on a longer endurance event it's one of the things that slow me down.