Few people fully understand everything that fitness instructor courses encompass. Learning about the human body, and how to improve it through exercise is just part of the package. It is also important to learn about human relationships in order to fully understand how to help those who need your help set and reach attainable goals.
You may also need to learn how to work with individuals who have physical restrictions. Many of the individuals who seek help from a personal trainer have never exercised. Having the ability to assess their beginning condition, and work within limitations will be vitally important. Not only will this help them progress quickly without being discouraged, this will also limit the risk of injury. Taking on such responsibility will require that you fully understand how to customize a plan for each individual that you work with.
Fitness instructor courses provide all of the education that you need in order to truly help people change their body and life. While most people enter this career based on their desire to help others, a high level of personal satisfaction comes from knowing that you are helping others live a better life. The financial rewards of such a career are certainly an additional bonus, as fitness trainers stand to earn an excellent yearly income. Those who are well educated do tend to earn more than the rest, so keep this in mind when considering these courses.