Book excerpt: In ''Your Body Mandala,'' Mary Bond, author of ''The New Rules of Posture,'' helps you unlock your somatic wisdom and find your way home to your body. With modern lifestyles that leave us feeling overwhelmed by mental and physical stress, being comfortably present inside our skins can be a challenge. Through an innovative weaving of movement theory, philosophy, neuroscience, fascia research, and personal story, Your Body Mandala helps you reclaim your body's inner guidance and improve your posture in the bargain.