I was listening to a podcast when the talk went off on a tangent, to a utility called F.lux. Whoever was talking made it sound like it was just for one platform, so I went looking for an alternative for Windows, given that merely 90.53% of us use it. The answer was F.lux! F.lux is also available for Linux, for what it’s worth. So I downloaded it.
The concept is simple. The lighting on our screens can interfere with our sleep patterns, so F.lux adjusts the screen based on what time it is, so that it interferes less.