Comment by Pooge

I think I have the same problem. I'm ever dehydrated now, but if I am I can tell something is wrong because my head starts to feel fuzzy (don't even know if it's the right word).

I used to get really bad migraines and a neurologist gave me a prescription. The only time I used it I felt like absolute shit. Never took another one.

Now I always have my 700ml flask with me.