http://www.kundalinilive.com/be-conscious-of-your-breath
All martial arts, all the disciplines that give you control over this body, begin and end with the breath, so whatever you do if nothing else you get from this class make it a point to be conscious of your breath. As you do kundalini yoga things will happen to you. You will expand and you will contract, life will become more interesting, life will become more energetic, sometimes your sleep or wake patterns will be interrupted but center yourself with your breath, when this happens, check your diet, balance your liquids. You have to be more conscious when you start this path.