Thank you very much for your replies. And, Sky, thank you for posting the information above.

I joined this group some time ago because I wanted to support someone with depression. Now, I suffer with it myself, and it is NOT pleasant. I didn;t realise just how debilitating depression could be. Anyway, I was doing a depression quizz on-line and stumbled on the fact that sleep deprivation can improve mood in some individuals.

I wanted to post about slep deprivation because I've noticed that if I sleep more hours than I should, it makes my mood worse. However, I have also noticed that If I get 5 hours of sleep for a few days, my mood improves. I am just wondering and very curious as to how sleep deprivation works for some people and not others.

Thanks for all your replies.