6This book is for people interested in becoming a fitness professional such as a group fitness instructor, personal trainer, wellness coach, or mentor. The depth of information provides the practical foundation for teaching and training quality movement and motor patterns. It is not meant to replace the manuals needed for fitness certifications. Rather, this handbook can also be used as a quick reference manual for current fitness professionals to refresh their skills and technical knowledge such as joint action, postural alignment, injury prevention, and more.