A relaxation technique (also known as relaxation training) is any method, process, procedure, or activity that helps a person to relax; attain a state of increased calmness; or otherwise reduce levels of pain, anxiety, stress or anger. Relaxation techniques are often employed as one element of a wider stress management program and can decrease muscle tension, lower blood pressure, and slow heart and breath rates, among other health benefits.

Relaxation therapy, the application of relaxation techniques, can be applied in various settings to complement treatment for stress, anxiety, depression, and pain. It addresses both psychological and physiological effects of stress such as increased heart rate, sweating, and muscle tension. There are many variations of relaxation techniques, including progressive muscle relaxation, autogenic training, guided imagery, biofeedback-assisted relaxation, and other techniques.

Thus, relaxation techniques are useful for either emotional pain caused by stress, anger, anxiety, and mood of depression, or chronic pain caused by strains, single-side muscle use, awkward position, restriction of movement in certain areas of the spine, improper form during physical activity, and stressful posture. Multiple relaxation techniques share a fundamental principle to decrease muscle tension and lower physical or mental pain.

Relaxation techniques are generally safe for healthy individuals. Occasional instances exist where individuals have reported negative experiences after receiving relaxation techniques.