So last week I had some sort of virus. The long and the short of it was I was in bed for 48 hours, hadn't ate or drank for that long.
And I wasn't much bothered either, couldn't eat or drink, my throat was killing me. Last thing on my mind.
I lay there and I was aware of the fact that my legs weren't spasming at all. I put this down to being completely shattered/wasted/whatever.
Anyway, my wife drove me to the hospital. First up, I couldn't walk at all, not even with crutches. Ended up in a wheelchair at the hospital.
I'll get to the point now. They put me on a drip and as soon as the drip finished. One litre or whatever, as soon as it was in my body the spasms started up again. And the spasticity cranked up. My legs locked up like usual and I could lumber out of the hospital on my crutches.
So there you go, hydration.