The Two Sleeps

“For most of evolution we slept a certain way. Waking up during the night is part of normal human physiology.”
— In case you missed it, the BBC has a reassuring if slightly sad article on the history of sleep, insomnia, and the apparently unnatural rise of the Eight-Hour Standard. Elsewhere and somewhat related, the Times has a piece on living alone and quirk-indulgence, and, to end on a different but still health-related note, there are also new tampons.

Photo by zhu difeng, via Shutterstock