Do I get enough exercise?

Every week I  got lots of exercise. From Monday to Friday I go to school  in the bus and back home. It takes 20 minutes each way at school  we have PE twice a week for one hour on Monday and Friday I  go swimming  once a week on Friday. I go to the mountain on  Saturday , On Sunday   I  ride a bike. I think I get about 6 hours of exercise  every week, When I do exercise. I feel good about myself.I get hungry and thirsty and I sleep well at night.  
BY Ainhoa