To work in the fitness industry you must attend one of the personal trainer schools available. There are different routes you can take to getting the education you will need in order to be successful with this profession.
The first option is to find personal trainer schools that are solely dedicated towards this. These will often be organizations that offer a variety of different certifications in which you can take and are usually done over the course of a few months.
This is a slightly more basic route to take and is a great option for someone changing their career mid-life.
Other personal trainer schools are found in actual universities where rather than being offered a certification you will obtain a college degree. These are going to teach you much more in depth knowledge and will cover many different topics in the health field. Not only would this prepare you to work in a gym but it would also prepare you to work in many other venues that are health related such as some hospitals or rehabilitation centers.
Finally you may wish to look into programs that are offered through technical trade schools as often they are in between a certification and a degree and are two year programs for those who are willing to devote slightly more time learning.
These are great because they are very tailored to this profession so you will not spend time gaining extra information that you will not be using. These are going to be ideal for those who know that they definitely want to work in a gym and want to be able to really offer their clients more advanced exercise principles.
Researching the various different options in your area is a good way to start to learn more about this profession and will help you decide the direction you want to take with it. Always consider what your personal situation is and how much time you have to devote to studying before you begin working in your career when making the choice of which educational institution you attend.