It's difficult to keep up with the exercise. You don't feel like it until you get started, then you feel pretty good afterwards. My understanding is that radiation doesn't zap your energy as much as the ADT therapy. I'll find out in a few weeks. I'm sure Chemo was not pleasant. I've found it helps to start a regular routine. Mine is: walk 3 miles after breakfast, another 2 right before lunch, and another mile around 3PM or so. Coupled with everyday moving around I end up with 7 to 8 miles a day and close to 20,000+ steps. I also try to get to the gym at least twice a week to do resistance training with kettlebells and floor exercises. After awhile it becomes so routine you miss it if you don't stick with it. So far the effects of the ADT are minimal, labs are good, and I am able to stay pretty optimistic.