Days spent memorizing knowledge, sacrificing sleep, and acing the next day's exams. Many aspiring medical professionals go through this. I was, of course, one of them. But I wanted to enjoy learning, so I devised my own study methods and shared them on social media, receiving words of gratitude from many people. This book was created to help you improve your grades while also making you think, "The human body is amazing! It's fascinating and interesting." It's a book where you can experience that studying can be fun and still lead to good grades. ● A book combining anatomy, physiology, and pathophysiology is born! There's one more thing I wanted to do with this book. That is to connect the knowledge of anatomy and physiology with the knowledge of diseases. Most classes and textbooks teach anatomy, physiology, and pathophysiology separately. But I believe that by being aware of the connection between "the basic mechanisms of the body" and "diseases," you can be even more impressed by the body's mechanisms and become more curious about studying, leading to self-motivated learning. Therefore, this book is divided into two parts for each chapter, with "anatomy and physiology" followed by "diseases." The painful effort of memorizing a vast amount of knowledge can be minimized by making you enjoy studying. The human body is fascinating and interesting! 〈Table of Contents〉 Chapter 1: Cells and Tissues Chapter 2: Skeletal and Muscular Systems Chapter 3: Cardiovascular System Chapter 4: Respiratory System Chapter 5: Digestive System Chapter 6: Urinary and Reproductive Systems Chapter 7: Endocrine System Chapter 8: Brain and Nervous System Chapter 9: Immune System Chapter 10: Sensory System