A neuro-PT has me rate everything I do throughout the day on an exertion scale of 1-5. I'm to stay below a 3. This includes all activities - walking up stairs, cooking dinner, emotional stuff, thinking. This was not easy. But after 3 weeks I have a bit more energy and strength, at that same low exertion level. I can do a bit more without crashing. Feeling very hopeful about this aspect of recovery.