"I practice," He grunts, wedging his arm up between Garrus' and his throat so that the press of his arm isn't a full choke. It still pushes the breath from his lungs and leaves him short on air, and he struggles to get his knee between them to increase the space, but as he's doing so he reaches up to try for a pressure point in Garrus' neck. If he did it right, it would be a Vulcan nerve pinch— unfortunately, he hasn't been able to master the technique so it would either fail entirely or make Garrus' arm numb briefly.