Martial Artist --
My boys train in taekwondo -- and they box, kick, break boards, block, flip, are amazing to watch them evade punches/kicks from opponents. I don't think there is a comparison in the training or execution of offense and defense.
Check out this 8 year old in the video: http://innerstrengthmartialarts.info/impact-of-mar...
I think I'm going to train. :)