Principles for Personal Trainers Author:Teri S. O'Brien This amazingly comprehensive book shares 88 easy-to-read and understand principles that will guide personal trainers (and anyone in a service-oriented industry) towards success. Covers topics ranging from accurate bookkeeping to effective communication to the hidden costs of client turnover. Principles for Personal Trainers offers new trainers ... more »a wealth of fantastic insight, and will help established trainers gain a professional edge over the competition.« less