"I can do it better."Ben snorts."Watch,"I say and slap my phone against his chest,"and learn."

　　My fists connect with the punching bag in a tap,tap,punch rhythm.I forget where I am and punch the bag like I have seen professional boxers do.I keep going at it until my arms protest and my speed slows.When I stop,my breath comes out short and heavy.It has been a while since I used the punching bag.Most of my fights mainly involve only the legs.

　　"What?"I snap at Ben's ...