What makes a person grow? What are the body systems and processes involved in growth? How can we support the body's growth? This delightful title answers these vital questions and more for young readers. Full-color illustrations, including diagrams, aid readers' understanding of how and why their body grows--from muscles to hair and skin! "Try This!" boxes give readers small activities or questions to consider as they read, further engaging them with the main content. This volume is well suited to complementing health class and science curricula learning.