I got tired of hearing "I'm bored" and "Can I play Nintendo?" so I took out their old Taekwondo gear and had them break boards and spar a little. The boy wanted in on the action too, but I didn't want him to hurt the girls so I sparred with him for a little bit. He can still manage a good axe kick without much practice the past few years.
I want to get them all back into some kind of martial arts.