Ages 7 to 12 years. Physical activity positively impacts the bodies, minds, and emotions of children, but unfortunately, most children are physically active only 15 minutes a day! Through fun, easy-to-follow activities, enhanced by photographs and illustrations, this book will motivate children to get moving. Kids will learn about: how the cardiovascular system works; the building blocks -- cardio, flexibility, strong muscles; warming up and cooling down; safety guidelines; how much is enough? How kids can get started: making a list of activities they like to do; activities specifically for the heart, improving range of motion, and endurance; keeping track of your progress; are you fit?; how to be active individually or with friends and family.