Morning everyone!
I agree with Joyful that the best solution is water - put some lemon or cucumber in it if you have some. Jif lemon works fine.
Fresh air also helps so open a window.
A shower also helps if you haven't already had one - keep it on the cool side.
Not that I know anything about sleep deprivation... coughs I sense that I am not alone here.
I have been overwhelmed by the urge to clearout today. It started with trying to sanitize the washing machine. Ours seems to get smelly very quickly. My dmum got me stuff from Kleeneze which seems to do the trick and I felt it was time to do it. Could I find it? Dd eventually found it in the boot of the car in amongst the mountain of horse riding gear 
Anyway I have decluttered the utility room and hoovered and mopped the floor.
That led on to me tackling the study. Those who have suffered me for the last year or so will know this is my area of extreme horror. I couldn't actually get into the room without moving things 
When I got going it wasn't as bad as I feared - just all badly stored. I can now walk in freely and the sofa and floor are clear. There is one pile in the corner of things for jumble or ebay. I have no idea where else to store it. Other than that it is not too bad. It needs a day or two of filing and it will be sorted. 
I think that is enough for today apart from the basic dw, worktop, hoover, wm routines.
I will also have to do some ironing.
I am relaxing for now though as I have a meeting at the school at lunch time. Eeeeek!