Is it natural to feel exausted after a lucid dream and even be a bit dehydrated?
I dont know, I feel the opposite way, I mean calm and happy, so I cant answer your question.
I guess that if you’re using WBTB you won’t have gotten nearly as much rest as you normally would have, so naturally you’d be tired. As for the dehydration, just drink some water, or better, milk ;D
That happens when I dream about, um… well, you know… fun…