https://medium.com/@tweedon8/how-a-screen-curfew-can-save-your-intimacy-bcd65de7c7c9

As the sun goes down, our circadian rhythms slow, and our nervous systems prepare for rest. But only if the screen goes down as well.

The artificial glow from our laptops, phones, and pads barrage the eyes with photons, signaling to the brain that the light is still going and it’s time to keep active. Meanwhile, as we stare at the screen and work it this way and that way with our fingers, our breath enters into a state of screen apnea, in which our exhales quicken with anticipation, and our inhales become shallow. It’s a state of agitation induced by the frenetic energy of nanopulsing pixels and the tantalizing perpetual motion of swipes and hyperlinks.