A celebration of the amazing human machine and a life on the move Your amazing Body can jump, sprint, twist, and twirl.
Studies show that American kids are becomi.
Kids walk and skate and tumble through these pages with such exuberance that even sprouting couch potatoes will want to get up and bounce around--and that\'s the ultimate goal.
Lizzy Rockwell explains how your bones and muscles, heart and lungs, nerves and brain all work together to keep you on the go.
Your Body is built to move.
A celebration of the amazing human machine and a life on the move Your amazing Body can jump, sprint, twist, and twirl