Traditional Chinese Medicine techniques such as acupuncture can induce a relaxation response, which decreases the heart rate, lowers blood pressure, increases energy and tissue regeneration, and reduces stress. One feels more relaxed, and digestion improves. As tension is relieved, so are headaches. Instead of being tense and angry, one remains calm, tempers stay even, and blood pressure can even decrease. Studies have shown that the substances released in the body as a result of acupuncture relax the body, and also regulate serotonin in the brain, which affects emotional states. Treatment will not, of course, change the circumstances of a person's life. But it can relieve feelings of anxiety or depression. As the heavy feelings of stress are relieved, a person feels more confidence in his ability to cope with the negative aspects of life and make necessary changes. This in turn can eliminate dependence on sleeping pills, tranquilizers and antidepressants.