NASM Essentials of Corrective Exercise Training book. The practitioner will be equipped to assess, identify and correct common movement imbalances. In addition to a detailed assessment procedure, this book contains a wealth of corrective exercises in the categories of myofascial release techniques, stretching, strengthening and integrated dynamic movements. These techniques, along with specific corrective exercise strategies for each part of the motor chain, make this text the main resource for learning and applying the systematic approach of NASM to corrective exercise.