Biphasic sleep was probably more common before artificial light, and you really need to be moving every 30-45 minutes. Even just a couple of minutes of walking or doing some chore counts.
> Biphasic sleep was probably more common before artificial light
The last time I looked into this theory it wasn’t nearly as robust as I was led to believe. It got circulated as fact for a few years but the people pushing it didn’t really have as much evidence for it as I assumed.
That doesn't make it false. And you'd expect something so radical as extending the lit hours of human life to affect our sleep, as it does many, many other species.
The last time I looked into this theory it wasn’t nearly as robust as I was led to believe. It got circulated as fact for a few years but the people pushing it didn’t really have as much evidence for it as I assumed.