The dad is into fitness in a MMA/Cross Fit/boxing kind of way. He is organized a trip for a bunch of boys to the gym to try a boxing workout. DH took J & B and they had a fabulous time.
The guy who owns the gym was some sort of boxing champion. I don't remember his name or his title. I do know the sad story of his title fight. The guy he boxed collapsed in the locker room after the fight and died a few days later. The gym guy quit boxing for a long time afterwards. Knowing that story, I hope the boys enjoy the workout but have no desire to actually box.