The ultimate growth guide for boys and girls You – like all children – will go through puberty and feel equally confused! Your body will grow and change, so it's perfectly normal to have many questions. That's exactly why the book you're holding was created. Follow the author on the journey of adolescence: from voice changes and body hair to mental health and everything in between. The Book of Adolescence is suitable for all genders. It will explain what you don't understand and give you advice on what you don't know. It is your essential guide on the road to adulthood.