Sports can be a hobby. A hobby is something your really good at. Something you enjoy and are good at. Sewing, drawing, different types of sports, sking, etc. Those are all hobbies. So once again, a sport CAN be a hobby.
~Silver
I'm not writing the essay for you but I have a reason why its necessary to take a chance. When you take a chance, something good can come out of it. You won't know what can happen unless you take a leap of faith.
I think your answer you are looking for is a dependent clause