Massage is one of the oldest healing arts: Chinese records dating back 3,000 years document its use; the ancient Hindus, Persians and Egyptians applied forms of massage for many ailments; and Hippocrates wrote papers recommending the use of rubbing and friction for joint and circulatory problems. Today, the benefits of massage are varied and far-reaching. As an accepted part of many physical rehabilitation programs, massage therapy has also proven beneficial for many chronic conditions, including low back pain, arthritis, bursitis, fatigue, high blood pressure, diabetes, immunity suppression, infertility, smoking cessation, depression, and more. And, as many millions will attest, massage also helps relieve the stress and tension of everyday living that can lead to disease and illness.

Massage, bodywork and somatic therapies are defined as the application of various techniques to the muscular structure and soft tissues of the human body. Specifically:

Massage: The application of soft-tissue manipulation techniques to the body, generally intended to reduce stress and fatigue while improving circulation. The many variations of massage account for several different techniques.

Bodywork: Various forms of touch therapies that may use manipulation, movement, and/or repatterning to affect structural changes to the body.

Somatic: Meaning “of the body.” Many times this term is used to denote a body/mind or whole-body approach as distinguished from a physiology-only or environmental perspective.

There are more than 250 variations of massage, bodywork, and somatic therapies and many practitioners utilize multiple techniques. The application of these techniques may include, but is not limited to, stroking, kneading, tapping, compression, vibration, rocking, friction, and pressure to the muscular structure or soft tissues of the human body. This may also include non-forceful passive or active movement and/or application of techniques intended to affect the energetic systems of the body. The use of oils, lotions, and powders may also be included to reduce friction on the skin.

Massage is the practice of soft tissue manipulation with physical, functional, and in some cases psychological purposes and goals. The word comes from the French massage "friction of kneading", or from Arabic massa meaning "to touch, feel or handle" or from Latin massa meaning "mass, dough". An older etymology may even have been the Hebrew me-sakj "to anoint with oil". In distinction the ancient Greek word for massage was anatripsis, and the Latin was frictio.

Massage involves acting on and manipulating the body with pressure – structured, unstructured, stationary, or moving – tension, motion, or vibration, done manually or with mechanical aids. Target tissues may include muscles, tendons, ligaments, skin, joints, or other connective tissue, as well as lymphatic vessels, or organs of the gastrointestinal system. Massage can be applied with the hands, fingers, elbows, forearm, and feet. There are over eighty different recognized massage modalities. The most cited reasons for introducing massage as therapy have been client demand and perceived clinical effectiveness.

In professional settings massage involves the client being treated while lying on a massage table, sitting in a massage chair, or lying on a mat on the floor. The massage subject may be fully or partly unclothed. Parts of the body may be covered with towels or sheets.

Acupressure (a blend of "acupuncture" and "pressure") is a traditional Chinese medicine (TCM) technique derived from acupuncture. In acupressure physical pressure is applied to acupuncture points by the hand, elbow, or with various devices.

Deep Tissue massage is designed to relieve severe tension in the muscle and the connective tissue or fascia. This type of massage focuses on the muscles located below the surface of the top muscles. Deep tissue massage is often recommended for individuals who experience consistent pain, are involved in heavy physical activity, such as athletes, and patients who have sustained physical injury.

Myofascial release refers to the manual massage technique for stretching the fascia and releasing bonds between fascia, integument, and muscles with the goal of eliminating pain, increasing range of motion and equilibrioception. Myofascial release usually involves applying shear compression or tension in various directions, or by skin rolling.

Reflexology is based on the principle that there are reflexes in the hands and feet that relate to every organ, gland, and system of the body.

Shiatsu ("shi" meaning finger and "atsu" meaning pressure.) is an eastern (oriental) born therapy that uses pressure applied with thumbs, fingers and palms to the same energy meridians as acupressure and incorporates stretching. It also uses techniques such as rolling, brushing, vibrating, grasping and in one particular technique developed by Suzuki Yamamoto, pressure is applied with the feet on the persons back, legs and feet (special set up is required for the "foot" shiatsu).

Swedish massage uses five styles of long, flowing strokes to massage. The five basic strokes are effleurage (sliding or gliding), petrissage (kneading), tapotement (rhythmic tapping), friction (cross fiber). Swedish massage has shown to be helpful in reducing pain, joint stiffness, and improving function in patients with osteoarthritis of the knee over a period of eight weeks. It has also been shown to be helpful in individuals with poor circulation. The development of Swedish massage is credited to Per Henrik Ling, though the Dutch practitioner Johan Georg Mezger adopted the French names to denote the basic strokes. The term "Swedish" massage is not really known in the country of Sweden, where it is called "classic massage".

Thai massage Known in Thailand as (Nuat phaen boran, IPA), meaning "ancient/traditional massage", Thai massage originated in India and is based on ayurveda and yoga. The technique combines massage with yoga-like positions during the course of the massage; the northern style emphasizes stretching while the southern style emphasizes acupressure.

Trigger point therapy - Sometimes confused with pressure point massage, this involves deactivating trigger points that may cause local pain or refer pain and other sensations, such as headaches, in other parts of the body. Manual pressure, vibration, injection, or other treatment is applied to these points to relieve myofascial pain. Trigger points were first discovered and mapped by Janet G. Travell (president Kennedy's physician) and David Simons. Trigger points have been photomicrographed and measured electrically, and in 2007 a paper was presented showing images of Trigger Points using MRI. These points relate to dysfunction in the myoneural junction, also called neuromuscular junction (NMJ), in muscle, and therefore this modality is different from reflexology, acupressure and pressure point massage.

Peer-reviewed medical research has shown that the benefits of massage include pain relief, reduced trait anxiety and depression, and temporarily reduced blood pressure, heart rate, and state anxiety. Theories behind what massage might do include blocking nociception (gate control theory), activating the parasympathetic nervous system which may stimulate the release of endorphins and serotonin, preventing fibrosis or scar tissue, increasing the flow of lymph, and improving sleep but such effects are yet to be supported by well designed clinical studies.

Massage is hindered from reaching the gold standard of scientific research which includes placebo-controlled and double blind clinical trials. Developing a "sham" manual therapy for massage would be difficult since even light touch massage could not be assumed to be completely devoid of effects on the subject. It would also be difficult to find a subject that would not notice that they were getting less of a massage and it would be impossible to blind the therapist. Massage can employ randomized controlled trials which are published in peer reviewed medical journals This type of study could increase the credibility of the profession because it displays that purported therapeutic effects are reproducible.