Do I really have a hobby or is it fake?!!? :((?

I have been doing gymnastics for 1 year and im in level 4 I skipped 3! And in a week is tryouts for level 5! So my gym is a YMCA a fun gym ( it's AAU ) over summer I an visiting a gym that is amazing and works out for 4 hours at least every day. When I'm there I feel week and not as good i mean they stretch for at least 4 hours a day every day !!! I want to be a Olympic gymnast should I give up?