I intend to look into research about Sleep and post any interesting conclusions in this thread. Others of course can post as they see appropriate.

Sleep takes up a significant part of our lives but we generally don't spend anywhere near as much time thinking about it as we do other activities, and if we do, it is generally immediately before or after indulging in it.

I would like to know:
-what the optimal ways of sleeping are (i.e. in terms of effectiveness, efficiency, physical & mental health, comfort, and so on).
-what role personality and disorders have on our experience of sleep: e.g. do differences in personality affect the optimal ways of sleeping? (this is relevant to the first point).
-general information about the correlation between various factors and various aspects of sleep.