On not feeling in a very physical mood

This morning:

Me: "Cameron, it's not too cold outside. Why don't you get your coat on and go ride your bike in the driveway?"

Cameron: "Nah."

Me: "C'mon, buddy...it would be good to go outside and do something active for a while."

Cameron, looking around--a.k.a., trying to come up with something to do--suddenly shouts: "I got it! I think I'm going to color. It's exercise for my arm."