Approximately half of personal training clients are women and a large segment of that group are in their 20’s or 30’s. As a result, the need for the fitness professional to be qualified to train pre and post natal clients is almost a pre-requisite for the job. Knowledge of the dynamic and unique physiological and bio-mechanical needs of this population, plus the practical ability to apply it are crucial for the fitness professional to know in order to safely train these clients. After learning the following information, the fitness professional will understand and be able to apply the fundamental knowledge needed to train pre and post natal clients safely and efficiently.