I felt that by the end of the day I was about to pass out. I put all my Energy into today's class assignment and they were very challenging. Now my back hurts and Im have already taken 2 motrin at lunch, which I had to skip due to being too tired to walk out to get my lunch from the car. So I had junk food for lunch to tide me over until the end of the long, and Tough day.......Will it ever improve. I think I may have MS, or something besides CFS???