Hi Kimberleydg--glad you found the site! it is a great place to ask questions!!
Unfortunately, there is no magic pill...when we feel better and can eat, we do!! I have gained some weight after my proctocolectomy and the only way to keep things under control is with diet (eating healthy) and excercise. I consider that the "old fashioned way" but it is really the only way:(
I started with walking about 12 weeks after surgery and added in weights about a month later. I don't do a lot of abdominal excercises, I might do 50 crunches a week, just because I am cautious after all my surgeries.