3. Sleep
A lack of sleep can cause your mouth to become dry, just like it causes a whole host of other problems. Did you know that the brain engages in neural ‘pruning’ during the night? Literally sorting through your memories and knowledge in order to ensure everything is working optimally?
Don’t skip sleep!
But this is what might also surprise you: getting sleep can also cause dehydration! The reason for this is that you don’t produce as much saliva during the night and of course you won’t be regularly drinking anything as you’re unconscious!
If you’re concerned about this then, try to solve the problem by having a glass of water by the bed.
The thing to remember though is that going short periods without water isn’t that bad for you. In fact, some studies even suggest it might be beneficial due to a process called autophagy.