The health of children can be maintained and improved through a balanced diet and regular physical activity. Young children are more likely to engage in physical activity, which is important for their physical, emotional, cognitive and social development. Healthy eating habits and physical activity behaviors during the first five years of life are critical for children's health. One of the key factors affecting immunity and growth is adequate nutrition. A well-balanced diet must include adequate amounts of vitamins, carbohydrates, fiber, proteins, minerals and fats. Each of these nutrients is essential for children's overall development and growth. Children who are physically active perform better in school and have better brain function compared to children who are less physically active. This book unravels the recent studies on child development and behavior. It also aims to shed light on the importance of nutrition and physical activity for children. Those in search of information to further their knowledge will be greatly assisted by this book.