• Study (most unlikely)
• Browse whatever site, e.g. LJ, tumblr, Facebook
• Clean my room
• Read a book (could be combined with studying) or pretty much anything I got
• Browse eBay (or any other site that sells stuff of interest)
• Watch Gossip Girl (or whatever other show I'm addicted to at the time)
• Chat

And what am I going to do now at 1AM in the morning? Clean my room.

• I don't study immediately when I get up, I give myself an hour to "wake up".

Result: I give myself more than an hour.

• I don't study when I'm hungry because I know I won't be able to concentrate.

Result: I don't study after I've had my dinner either, because I eat so much my body tells me to "rest".

• I stay in bed after a good night's rest because my bed is so comfortable.

Result: I fall asleep and end up sleeping for 11-14 hours in total.

• INTERNET

Result: INTERNET Might update this later.