Rolling Over: Tummy to Back

Tonight we had Linden doing some tummy time, and he rolled himself over to his back. He's done this before, but this seemed to be the first time he consistently did it when we continued to put him on his tummy. Sometimes he would need one arm trapped under him to help him figure out how to roll over, but tonight he figured it out when both arms were stretched out. Here's an action shot as he's rolling.