Having a BS degree in Business and MA degree in education and spending over 10 years in education. I am looking for the best approach to switching careers into personal training and nutrition.
one of the things I like is that you can dip your toes into this industry without having to jump in with both feet.
I assume that you are a fitness enthusiast already and work out regularly for yourself. You may be a member at a gym which is were many trainers get started. As Harris said, a personal training certification (I strongly recommend NCCA accredited) is a must-have; I believe that professional liability insurance is, too. When you are working for a gym, it is usually provided but if you want to strike out on your own, you need to have one.
You may be able to find a job part-time while you maintain the day job. Having a successful business in personal training is absolutely possible but it is usually not so in the first few years. Your business degree will be of great value. It is something that many trainers lack, and it makes the difference between success and failure in this industry.
The scope of practice for a personal trainer without a degree in nutrition is limited to giving generic advice. This is still true when you get one of the specialty certifications. Only a degree in nutrition authorizes you to give specific recommendations. All personal trainer certifications talk about nutrition somewhere in their textbook. I would initially get a specialty in the population you are interested in. A specialty in senior fitness, for example, can be of great value if you want to target this population.
I wish you good luck.