Cooper fell asleep during his nap on his side today for the first time.  This evening he rolled over and slept a lot of the night on his belly for the first time.  It will be fun to see if he is a side sleeper like his dad or a belly sleeper like his mom.  We can now tell how tired Cooper is, if he is super tired he sleeps on his back otherwise he wiggles around until he ends up on his side or belly and then passes out.