 Things only real martial artists do. First, you instinctively bow every time you enter a room. Or you may also fight the urge to salute somebody you meet. Now, when visiting somebody at their home, your brain immediately scans the layout and analyzes which room would be the best in the house for a home dojo and how you would set it up if you live there. Now, married people often have two versions of this thought. There's the space that a spouse might be more agreeable with and there's the space that you would choose if you had full say, ground floor. You also instinctively bow when exiting the room.