Despite a very low salt meal yesterday evening, I was still hit by cramping during the night. The good news is that the burning was minimal, which I'll gladly take.

I just don't understand what could be wrong that my muscles can't make it through the night without cramping. I used to be able to sleep eight solid hours without ever waking up for any reason, but now it seems I can't go four-to-five hours without having to re-hydrate. My basic kidney values are fine.