Roll over, roll over

Theo rolled over this evening. Gus and I witnessed it. (Jonathan was about 45 minutes too late.) Theo was working out on his tummy and he rolled back on to his back, whacking his head on the floor in the process. So we put him back on his stomach to see if he would do it again. He did! The third time was a no-roll. He tired himself out trying to scooch forward.