This book stands as both a guide and a reference for students, educators, and health professionals who wish to deepen their knowledge in a way that feels engaging and interactive. As you progress, you will encounter activities and assessments that reinforce your learning, making it easier to retain and apply key principles in both academic and practical settings. Whether you are a student aspiring to enter a health-related field, an educator looking for enriching resources, or a professional revisiting core concept, this text aims to be a comprehensive tool in your journey of discovery.