On Your Mark, Get Set, Grow! by Lynda Madaras

On Your Mark, Get Set, Grow! : Paperback : HarperCollins Publishers Inc : 9781557047816 : 1557047812 : 14 Mar 2008 : Responding to real-life questions and concerns from younger boys about their changing bodies, this title covers a range of topics that's just right for them: the growth of sex organs, body hair, and facial hair; weight and height spurts; the unwelcome appearance of acne and body odour; shaving; circumcision; and, erections and ejaculations.