PDHPE in primary schools lays the foundation for students' well-being by encouraging understanding of self and others, promoting physical activity, and influencing personal health choices. It teaches social skills to build relationships, the importance of physical activity and healthy eating for lifelong health, and ensures students learn in a safe environment. PDHPE is essential as it educates students on sensitive topics, guides them to make positive health decisions, and provides strategies for safety that have long-term benefits.