For those interested in improving the whole "screen lights mimic the sun and keep you awake" thing, consider checking out Flux -- https://justgetflux.com/
It adjusts the colors of your screen late at night.
If you're on Linux, Redshift is a good alternative to Flux. It's in Fedora and Ubuntu package managers - 'yum install redshift' or 'apt-get install redshift' respectively (if memory serves).
It adjusts the colors of your screen late at night.