Another miraculous thing after PERCS

I was doing exercises with Brendan this evening and afterwards I sat him down on his bum and let him play while I was stretching his healcords. I noticed he was sitting so straight all on his own. His right leg was almost flat on the ground. He looks so awesome! Sorry it isn't the best photo, it was my camera phone and he was busy playing. He loves cars!
His calves are getting bigger. They aren't so skeletal like anymore. I see muscles forming. His biceps are coming back as well from using his walker without the arm troughs. I really want him to become stronger but he typically does not like therapy or working very hard. I must say he did great tonight. He had fun, didn't complain too much and after working out, stretching, and playing he walked three laps around the house.