I have a bottle of water by my bed and i have a good swig just before i go to sleep and immediately on waking. I then have a glass of water between my first two coffees in the morning. If i'm working, i take a water bottle with me and fill it numerous times per day - i have hyperhidrosis and sweat profusely, no matter how strenuous the work (i can work a sweat up pasting the first 3 drops of paper!). Then i have another bottle of water by my side when watching tv of an evening.
When i was in my teens, my dad used to say i was never away from the tap.