The Happy Muscles Guide Book is a self-help guide on how to smooth knots and release tightness in muscles. This book empowers the user to help identify what might be causing them pain, while giving the user the ability to make pain go away. This trouble-shooting guide features more than 250 pain-mapping muscle knot illustrations. It illustrates pain patterns, muscle knot locations, and self-help treatments for the entire body in an easy-to-follow format.