Interesting Fact - Sleep

Before the Victorian era it was not uncommon for married couples in the UK to sleep apart.

(The change came during the industrial revolution when we all ended up crammed together in tiny houses. Nowadays, according to research presented at the British Science Festival, couples are reluctant to sleep apart, with only 8% of those in their 40s and 50s sleeping in separate rooms. I don't see why we can't sleep in separate houses.)