Disadvantages: Very challenging. It depends on the individual. If you are an outgoing and sociable person, then a fitness instructor is very suitable for you. After all.
At present, most people who go to fitness belong to the middle and high-end crowd, which has strong pressure resistance and can give personalized solutions according to different situations of customers.
Automobile inspection and maintenance is a technical activity. You will only be a blue-collar worker if you are ordinary, and you can do well.
Start your own business