The colorful Usborne children's book "What happens inside my body?" playfully introduces curious children to the functions of the human body. On 12 lovingly designed pages, little explorers aged 3 and up discover how organs such as the heart, lungs, and stomach work together. This interactive nonfiction book in a compact format of 16.5 by 19.5 centimeters features over 40 sturdy flaps. Hidden behind them are exciting secrets and easy-to-understand explanations that vividly impart early biological knowledge and spark children's curiosity.