Yesterday I've been using my iPad literally all day long, and by the evening I got headache, and it was hard to fall asleep. Then at night I struggled because I saw the light of the screen and dreamt with apps, and scrolling texts, and with theese motion effects. And I couldnt think of anything else, it captured my mind and didnt let me sleep. I had a very hard sleep. Anyone else would like to tell here his or her experiences with using ipad for so long time continuously?