Teaching: When teaching a class, if you are guiding your students into a pose and you haven't been doing the class along with them, how do you demonstrate safely if you haven't warmed up?

When you teach and demonstrate, you can warm up beforehand or keep a daily practice, that way your body is more prepared when you need to demonstrate a pose. If you are not feeling safe demonstrating the asana you are teaching that class, perhaps consider demonstrating variations or modifications of the pose, maybe with the use of props.