My favorite exercise

I started to exercise at the gym. I wanted to use th treadmill and try out hula dancing.
On the first day I went to the gym with my sister.
There was a hula dance class scheduled in the studio classes. Because a lot of people enjoy hula, I was sure I can enjoy the dance too.
My expectations were wrong. It was boring.
On the 2nd day there was an aerobics class. I didn't feel like taking the class. I wasn't interested in the exercise.
I thought I didn't like aerobics. My sister said "If you haven't tried it before you shouldn't decide whether you like it or not". I agreed with her.

And then I tried aerobics for the first time. I enjoyed it a lot.
Against my expectations, I liked the exercise very much. Now I'm look forward to take the aerobics class every week.