Sorry you're dealing with one of the more frustrating symptoms...because as we're all told, "You look fine..."

Try to make sure you're drinking enough fluids during the day; dehydration will zap you of energy. Also listen to your body and rest in short spurts if need be.

I've had it all summer as well. I decided to reduce one of my drugs that has made me sluggish in the past; now I hardly even need a nap! The next step is telling my neuro