In my opinion, the best leisure activity for teenagers is playing sports. Firstly, if you play sports, you will have a fit body. Secondly, playing sports helps you relax after stressful lessons at school such as: badminton, football, volleyall, ect. Finally, when you play sports, you can make more good friends to improve our skills. For these reasons, i think their parents should respect their opinion and advise the best thing for them.