I'm hoping someone can offer me some advise with a problem I have which is driving me mad. I've gone through the menopause (I'm 54). What is happening is when I sit on the sofa around 8pm each evening I fall asleep within 5-10 mins. The next thing I know is I take at 3am and can't get back to sleep. I simply can not stay awake once I sit down and as I've been standing/walking/working/running around all day I simply can't stay standing up/active til 10pm/bedtime. Any ideas?