Stress is a normal part of being human, but when it becomes chronic it can quietly erode your health, sleep, energy, and mood. This handbook cuts through the noise to give you a clear, evidence-based understanding of what stress actually does in your body—from the HPA axis and cortisol to its effects on digestion, immunity, and mental well-being. You will learn practical, everyday strategies that major health authorities like the American Institute of Stress, the Endocrine Society, and the Mayo Clinic recommend: nutrition tweaks to stabilize blood sugar, movement that soothes rather than exhausts, sleep hygiene that resets your circadian rhythm, and simple breathwork and mindfulness techniques proven to lower stress markers. Each chapter offers concrete steps, sample days, and questions to help you personalize your approach. This book is designed to complement your own medical care, not replace it—giving you the confidence to have better conversations with your healthcare provider. Whether you are navigating work pressure, caregiving, or the cumulative toll of modern life, you will find a trustworthy, non-alarmist path forward. Part of The Practical Health Library.