There is no reason not to wear one when you think about what can go wrong.
you really should wear a cup its always a good idea to be protected.
I told my nephews when they were young to wear a cup.
stretch everyday for a least 10-20 mins
Ask your teacher. In my opinion - better safe than sorry.
You probably should.
A girl in my gym class said guys have to if they want to play. I want to be protected but I also don't want to be the only one wearing a cup