Totally agreed on the mineral thing. Most people concentrate on potassium, but magnesium and the ability to absorb your calcium (vit d required) is also a big player.
I have to say that the chronic dehydration thing is a common
myth floating around. I'm all for drinking water, but most people aren't dehydrated. That myth started years ago, after people started reporting fluid replacement levels of 8-10 glasses of water per day. Since few people drink that amount, obviously they are dehydrated. But, that's 8-10 glass
worth of water (fruit and veggies, milk, coffee, tea, etc. all count), not 8-10 glasses of water, itself.
I've had some bad cramps, lately. Concentrating on my mineral intake, stretching the effected areas (when not cramped), staying hydrated (I'm not
against liquid...), and adequate rest seems to have helped. I'll know more once more time has passed.