Human body's secrets that are too interesting

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Children's Book
The human body is the most familiar "microcosm." In this book, we explain the mysteries and secret mechanisms associated with the human body in an easy-to-understand way so that anyone can understand them. ◎ Does a fart come out of your mouth when you put up with it? ◎ Why does your left side hurt when you run right after a meal? ◎ If you count acne, it increases? ◎ If you don't stop hiccups, you may die? ◎ If you think about it carefully, why is the word "buttocks" there. etc. The surprising answer is in this book!