I have two characters, a man and a woman, both serious MMA fighters. The woman is older and nearing the end of her career, the man is a young up-an-comer. I'm thinking she's probably UFC Bantamweight (135 lbs) and he'd be a light heavyweight, or maybe a class smaller. Anyway, I want them to train together. Not spar, probably, but whatever else two athletes of such different sizes could reasonably do. Would there be exercises that aren't really affected by size, and also are there exercises that totally wouldn't work with two people of different sizes? And, even more specifically - early on, he's being a real jerk and tries to physically intimidate her. She surprises him, flips him somehow, and he lands on his back on the mat. Then he mouths off a bit more and I want her to do something that is reasonably safe (like, not a throat punch or an eye gouge or anything!) but that would shut him up. Is there any sort of knuckle-to-the-solar-plexus trick or anything? Pain would be fine, silence would be great, but no serious injury. Thanks for any help with this - I know there are some martial artists around, and I'm eager to learn!