The practice of promoting healing or positive development in any way is known as hypnotherapy. As such, hypnotherapy is a kind of psychotherapy. Hypnotherapy aims to re-programme patterns of behaviour within the mind, enabling irrational fears, phobias, negative thoughts and suppressed emotions to be overcome. As the body is released from conscious control during the relaxed trance-like state of hypnosis, breathing becomes slower and deeper, the pulse rate drops and the metabolic rate falls. Similar changes along nerve pathways and hormonal channels enable the sensation of pain to become less acute, and the awareness of unpleasant symptoms, such as nausea or indigestion, to be alleviated.