<p>Building up the body's immune system is critical for fighting viruses as well as overcoming chronic illness. <i>The Complete Idiot's Guide® to Boosting Your Immunity</i> provides the easiest ways to strengthen natural defenses through diet, supplements, and healthy habits.</p> <p>Readers will discover what foods to eat in order to fortify their defenses, as well as how to navigate the complex world of vitamins and natural supplements. With information on the role of exercise in immunity as well as healthy habits that can protect you from germs, this is an essential guide to strengthening the immune system.</p>