Your Body: The Missing Manual: The Missing ManualWhat, exactly, do you know about your body? Do you know how your immune system works? Or what your pancreas does? Or the myriad and often simple ways you can improve the way your body functions? This full color, visually rich guide answers these questions and more. Matthew MacDonald, noted author of Your Brain: The Missing Manual, takes you on a fascinating tour of your body from the outside in, beginning with your skin and progressing to your vital