What did the STRICT study generally find out the effects of internet use on sleep?

If you look at a screen for too long your eyes can become tired because of eye strain. time flys when your looking at a screen so if you look at it for too long you start to lose track of time? sorry for the strange answer im

in a rush for points

9, 5, 10000000 ( that is supposed to be a ten for the last one)

answer///weigh training and pilates;