More on the history of sleep from the BBC: The myth of the eight-hour sleep.

We often worry about people who lie awake in the middle of the night – but it could be good for you. Scientists have been saying for 20 years that the eight-hour sleep may be unnatural, and historians increasingly are backing them up. [continue]

History plus physiology — what could be more interesting? I’ve blogged about this before (see the history of sleep) and am still captivated by the idea.

I’m kind of tempted to do without artificial light and go to bed early each night. What would that do to my sleep patterns?