It's about time!

So Brennen is just starting to lift his head up during tummy time. I know that he has had the strength to do it for quite some time. When I hold him upright, he has no problem holding his head up and looking around. And he has no problem playing with the toys on his bouncy seat toy bar. So, I know that his chest, neck, and arms have been plenty strong enough to hold his head up. He has just been too lazy to do it. When I would put him down for some tummy time, he would either: just lay there and cry; lay there, puke and roll his face around in it, then cry; or just fall asleep (as seen below). I guess he has now realized that tummy time is going to happen whether he likes it or not, so he might as well look around and enjoy the view.