Why are more people feeling tired than ever before? Even with enough sleep, many still experience low energy, mental fatigue, and a constant sense of exhaustion. The problem is not just rest — it is circulation. This book introduces the concept of Human Energy Circulation, explaining how energy flows through the body, and why modern lifestyles are disrupting t Inside this book, you will discover: his natural process. • Why energy does not simply “run out,” but gradually becomes inefficient • How modern stress and habits disrupt internal energy flow • Why fatigue is often a circulation problem, not just a lack of rest • How to recognize early signs of energy imbalance This is not a medical book. It is a system-level perspective designed to help you understand how your body manages energy — and why it may no longer function as it should. If you feel constantly drained, this book will help you see the hidden pattern behind your fatigue. Understanding circulation is the first step toward restoring energy.