I do know someone else who have also had this happen, so its more common that you think. Hope this info helps Kayte - 'cos it is SO not fun! I know what you mean, a good old drink stops it, but its not real sleep is it, more like 'passing out'!
Congrats on the 25 days, that is fantastic. Day 13 for me, the longest I've gone in 10 years! Frustrated today, wanted a drink but fought it. Tomorrow is another day!
Sweet dreams to all - I really mean that.