There are many kinds of hobby nowadays. Its very important to have something interesting in your life, and you can choose from a long list of tmem: painting, singing, dancing, reading and so on. Sport is a kind of hobby, and as for me - i like sport dancing most of all (or smt different, for your taste).
i fond of it, i like competitions and team spirit. It makes me happy.
So, if you train hard in anything you like, you will achiev your dream.