Running crazy

Reagan and Maddy have this thing about running around our house. Our main floor is like a running track. They take off running and one ends up chasing the other. They run for a half and hour at a time - literally. I used to worry about exercise for my girls. They have a built in playmate... and running partner. Reagan sprints and Maddy bounces across the floor. I can't imaging how fast she'd be if she propelled herself forward instead of up. They are way too cute playing together.