As you get older, do you notice any change in your sleeping pattern? I observed that older people sleep less or they just sleep early thus they wake up early? There is an office mate of ours who we call grandpa because he really wakes up at around 4AM everyday. Ha,ha,ha!
Our son on the other hand, sleeps for ten hours everyday. We are quite sad though because he does not have his afternoon naps. Yes, he plays all day.