Here's why you don't feel jet-lagged when you run a fever

A clump of just a few thousand brain cells, no bigger than a mustard seed, controls the daily ebb and flow of most bodily processes in mammals -- sleep/wake cycles, most notably. Now, scientists report direct evidence in mice for how those cell clusters control sleep and relay light cues about night and day throughout the body.

Originally published at https://www.sciencedaily.com/releases/2016/12/161222130410.htm