I always have a drink of something at hand, all day. Glass of water at the bedside, a bottle in my bag when I’m out and about. I totted what I drank yesterday and it seems like an awful lot! 4 mugs of tea, 3 mugs of redbush (all black, no sugar), 1 mug of coffee (black with sugar), 1 Diet Coke, and at least 1.5l of water. Is this normal? How much does everyone else drink?