Find resources to become certified as a personal trainer. While licensing is not required by most states, many employers in the health and fitness industry look to hire personal trainers that are certified through a respected organization.
There are a few organizations that offer certiciation in the field of personal training. The American Council on Exercise, the American College of Sports Medicine and the National Strength and Conditioning Association are three such organizations. To learn more about certication as a personal trainer, see Tests.com's Personal Trainer Test Guide.