I find it impossible not to reflect on my personal experience whenever this comes up. I spend 8+ hours a day on a computer, looking at screens. Probably more. I am looking at a screen literally 10 minutes before falling asleep (watching stuff on my iPad).

I can easily sleep 8+ hours. Today slept 10.5.

I'm either not convinced screens are an issue, or they simply are not an issue for me personally, but if thats true -- WHY?