On one of my many, many threads on orthostatic intolerance in ME/CFS, one of the things we have been discussing is how to get the best out of combining Staci Stevens' approach to limiting your exercise in the light of CFS people's problems with aerobic functioning on the one hand, and Dr Benjamin Levine's (too gung-ho for CFS people) exercise programme for those with pure OI/POTS. That thread is her