Recognizing the need for puberty education books for younger children, award-winning author Lynda Madaras published On Your Mark, Get Set, Grow!: A "What's Happening to My Body?" Book for Younger Girls in 2003 to great acclaim. Now, in her unique, straightforward, warm, and funny style, Madaras presents On Your Mark, Get Set, Grow!: "What's Happening to My Body?" Book for Younger Boys.

Answering real-life questions and concerns from younger boys about their changing bodies, Madaras covers a wide range of topics at a reading and comprehension level appropriate for them: the growth of sexual organs, body hair, and facial hair; sudden increases in weight and height; the unwelcome appearance of acne and body odor; shaving; circumcision; erections and ejaculation; feelings about puberty; and bullying.