telefoon

Everyone keeps telling you the same thing: “Watch out for blue light!” “The light from your phone is terrible for your sleep!” “If you want to sleep well, you’d better stay away from your phone!” And so on.

In the end, it all comes down to the same message: the blue light from your smartphone has a negative effect on your sleep and, as a result, on how refreshed you feel when you wake up in the morning. But how big is that effect really?