We give DS some tummy time each day, and last night, he rolled from his tummy to his back!! DS will be 3 weeks tomorrow, and this seems way too early/fluke. None the less, I was completely speechless watching it happen. He is strong though! We haven't done tummy time today so no idea if he'll do it again or not. Just wanted to share a proud mommy moment, even if it was beginner's luck.