Yes, I've noticed that!

Here's something for you to read: http://www.naturalhydrationcouncil.o...-on-hydration/

With all that salt you're eating, combined with a low-water intake [a pint a day is nowhere near enough], it's no wonder in the morning your mouth is as dry as an Arab's sand shoe!

The other thing that helps with getting a good night's sleep, and feeling fresher in the morning, is in ensuring that the air quality in your bedroom is good, so that means good ventilation with adequate heating, removing any dampness, and keeping dust/dirt and clutter down to a minimum, so that whilst you're asleep, you're not breathing in excessive dust or mould spores.

Maintaining the air quality in your room is also good for your chest

Marco.