I enjoy teaching fitness classes, so the job is more of a hobby than work. The culture is excellent, as instructors are very willing to step in and substitute as needed, and the supervisor is supportive and understanding. A nice perk is that I am able to use the fitness room and take classes free of charge on the days I work. I have learned how - more ... to innovate a new class modality that has very limited research available, and it's now a well-attended class. The hardest part of the job is to keep physically healthy by not overdoing it while teaching classes, in order to keep my joints healthy. ... - less