I'll publicly admit, I don't do "official" tummy time with Hannah everyday. I do, however, lay her on my belly, hold her over my shoulder and hold her over my lap, all of which technically count as tummy time according to a PT I met recently. And let's face it, this kid came out holding her head up.
Today, though, we did a lot of mat time and she rocked the tummy time, as usual.
After all that hard work, she certainly needed a rest.