What's there in Sleep?

It's 1:15 AM now when I have started writing this directly in the blog editor. Nope, not feeling sleepy yet. I remember the time when I used to write long diary entries that took 1-2 hours and I used to sleep at 4 AM. It was back during 2008-2010 when I was in 11th standard and then 12th. And then there was a time when I spent most of the time sleeping or just lying on the bed. I also do remember searching once on Google "Am I depressed?". But just before a few minutes ago, I thought more about it and I thought maybe before sleeping I will write a post about it...