"What to Expect When You're Expecting" is a popular pregnancy guide that provides comprehensive information for expectant parents. It covers various stages of pregnancy, offering insights into physical changes, emotional adjustments, and prenatal care. The book also addresses common concerns and questions, making it a valuable resource for first-time parents. In addition to medical advice, the book includes tips on nutrition, exercise, and preparing for childbirth. It features personal stories from other parents, which can help readers feel more connected and supported during their journey. Overall, it serves as a practical companion throughout the pregnancy experience.