On call.  I've always been told that it's important to drink plenty of fluids during exercise, and it seems to work for me.  But now I've read that too much water can be very dangerous.  Which is right?
Simon
Harvey B
HB
D003681:Dehydration / Q000517:prevention & control; D004326:Drinking; D015444:Exercise; D006801:Humans; D008297:Male; D005082:Physical Exertion