I love that story! My background is in dance and so sometimes I play creative movement games with my nephews. Once their father came out and just laughed at me saying "what crazy things are you making my son do?" but we have a great time. Last time I was in my hometown, the 5 year old wanted to workout with me in the backyard. We did box jumps, lunges, squats, push ups, frog jumps, sprints. Everything. And when i was tired, he said "do we have to stop?" It's so awesome to see and reminded me of how joyful every movement can be. We should always workout like children.