Can you still sleep through the night?

[David777]

The OP is incorrect assuming most of us sleep or once did in a single session that lasts all night though obviously some people do. Instead there are many people like this person that have never slept across say 8 hour periods but rather have always slept and woken up multiple times each night even as children.

 

[againstthegrain]

It's been speculated that prior to the origination of the 9-5 society that some slept for a few hours after dark and then woke in the middle of the night for a couple hours and then resumed sleep until it was light out so sleeping 8 continuous hours is perhaps a man made idea that defies human biology.

basic CNN article on sleep