Morning

I am a morning person. I sleep early and wake up early. Sleep early can mean hitting the sack by 10 pm and waking up at 5am. This has been going on since I was a student. I am wondering which habit is the better one, sleep later and wake up later or what I am doing now.
Right now, I can hear the birds chirping outside my window as they welcome a new day. I doubt the birds ever wake up feeling "grumpy". A good lesson for us.
Are you a morning or a night person?