One of my default "at rest" stances is to put my hands behind my back, right hand on left elbow, left hand on right elbow, forearms parallel. I've had fatfucks look at me like I'm a master yogi for this simple pose. They lack the basic mobility to even move their backwards facing palms behind them 1 inch past the plane of their body.  I also occasionally stand on one leg in a #4 configuration, keeps me paying attention. Won't even start with how unfeasible that is when you weigh more than a fridge..