Rolling Rolling Rolling

This video is from two weeks ago. Second Son was three weeks and two days old. He rolled over from his tummy to his back about ten times in a row. He did the same thing when he was four weeks old. In the past few days, I haven't seen him roll over. Perhaps he gained too much weight so his arms aren't strong enough anymore. Or perhaps he can control his arms enough to keep himself from flinging them forward with enough strength to turn over. Or maybe he can still roll over; I just haven't given him enough time on his stomach.