I sleep very lightly and struggle with insomnia. It is worse when I get woken after some sleep (say at 5am - I cannot get back to sleep). We go to bed late (dh likes to stay up - if I go to bed before him then he wakes me when he arrives and I cannot get back to sleep so I stay up until he goes to bed). He appears able to exisit on about 5-6 hours a night. Am I unreasonable to ask him to sleep in the spare room (or sleep there myself) occasionally when he has a really early start? I find that if we are up until 1.30 - 2 and then I get woken again at 5.30 then I can't function at work all day. However dh was not happy at the suggestion so wondered if I was BU.