gym classes

So I finally decided to join a gym because I really like that I can just show up and someone tells me what to do to workout. I don't have to come up with a workout plan for the day or try to figure out what I'm going to do. I've tried a variety of classes just because I can right now with summer break. I just hope they have the classes I want in the afternoons once school starts back up. But I've taken Zumba, which is fun, but my body does not naturally move well for the Latin dances. So I feel a little awkward at times, but the great thing about this gym is it has an older crowd, so I don't feel completely weird. I also take the PUMP classes, Kickbox circuit, and I did my first spin class today. Does the slight discomfort from the seat go away or do people just become inured to it?