You have to find out what it's that your customers or future customers are looking for in a personal trainer. There are plenty of personal trainers who skip this and miss their chance to mobile fitness marketing systems lure more business. If you're wise, you won't repeat their mistakes.
The word "research" probably brings to mind men with gray hair and thick glasses who probably have not had a shower in weeks, poring over dusty old books - in short, mind-numbing tedium. Since you're a mobile fitness marketing, you most likely decided on your career because you're passionate about health, action and client contact - maybe not because you want to sit in front of a computer crunching numbers until your teeth hurt.
There isn't any way around it: if you would like success, you will need a marketing plan, and if you want a marketing plan, you'll need to research the fitness market. Market research is the only way you will be able to discover what your customers look for in a personal trainer, what areas your competition excel in and what their weaknesses are, and what strategies fitness email marketing you need to bring customers to your door.