What is there to be ashamed of? Fitness is good for you in all aspects. You have a good figure, and I don't know how envious you are outside. And you still work there, you can enjoy preferential fitness. Why not? If you develop slowly, you will have to work hard for a long time before you can get promoted slowly. But the salary of the fitness instructor is still considerable, and then you have enough money to jointly invest in the gym or something, as do other front desks.