Biofeedback is a FDA approved alternative to medicine approach which enables an individual to learn to change some physiological activities for the purpose of improving ones health.  This can assist with gaining control over ones physical processes that are normally under automatic control of the body, such as heart rate, muscle tension, breathing, perspiration, skin temperature, blood pressure and even brain waves. By learning to control these functions, you may be able to improve your medical condition, relieve chronic pain, reduce stress, or improve your physical or mental performance (sometimes called peak performance training). (Harvard Health)