Well, it's as expected I guess XD. I noticed that my attention span has become shorter when I read physical books (compared to reading on phone). I kept wanting to look elsewhere (for some reason). I don't think it's a matter of getting distracted.. more like being fidgety...? 

There's also that probability of having a brain in prolonged Zombie mode - my fault *sigh* - making it hard to focus on reading. Another thing that kind of makes me think it's lack of sleep is how irritable I was these past few days. Oh well, I'll try to get some proper sleep today...