Hi Building rest periods into the day makes a big difference for me. The difference between having a crash or not. Envelope therapy is useful. I try to stay within my energy envelope, with any increases starting in very small increments. At one time, I began exercising by doing two crunches, then waited two days, and did it again. Over the next few months I was able to increase quite a bit without ill effects. Eventually I was doing 40 minutes of basic yoga and pilates and other stretching exercises, and 20 minutes of 3 lb. dumbbells. And I was going for 2 half hour walks every day. Mind you, that was a few years ago, and came to a halt after a crash. (I'd gone away for a week and spent the next 2 months wiped out.) I have had to start over more times than I care to count but the point is, it works.