Weakness, drowsiness, apathy, poor appetite, deterioration of the skin, hair and nails - all this may be a sign of reduced immunity. These days, such a phenomenon is not uncommon. Stress and a large number of tasks do not leave time for proper rest. As a result, many people eat mainly fast food, which does not contain any substances beneficial to the body, sleep 5–6 hours a day, while good health requires at least 8. And regular visits to the doctor for most residents of megacities – this is something from the category of fantasy. You will learn about what you need to do to increase immunity and improve health on the pages of this book.