The parasympathetic system, on the other hand, controls your rest, relax, and digest response. When the parasympathetic system is dominant, your breathing slows, your heart rate drops, your blood pressure lowers, and your body is guided back into a state of calm and healing. Putting your body in a parasympathetic state is easier than you might think; it just takes a slight manipulation of the breath. A Summa Cum Laude graduate of the University of Pennsylvania, Dr. Berzin went to medical school at Columbia University and later trained in internal medicine at Mount Sinai Hospital. She is also a certified yoga instructor and a meditation teacher, and has formally studied Ayurveda. Dr. Berzin writes for a number of leading wellness sites, and speaks regularly for organizations including the Clinton Foundation, Health 2.0, Summit and the Functional Forum, on how we can reinvent health care. She’s also a mindbodygreen courses instructor, teaching her Stress Solution program designed to help you tune down the stress in your life and tune up your energy and happiness.