A new study reveals that the practice of sleeping through the night was established until just a few hundred years ago.
Here we tell you how our ancestors slept.
Sleeping 8 hours straight was not the usual thing for our ancestors | Video | CNN
2022-01-10T19:33:29.388Z
A new study reveals that the practice of sleeping through the night was established until just a few hundred years ago. Here we tell you how our | Health | CNN
