Chiropractic medicine is an alternative and complementary form of therapy that concentrated on the musculoskeletal system and the effects this has on the nervous system and health in general. There are a variety of treatment techniques that chiropractors can use. The most commonly used technique is spinal manipulation. This involves taking the joint past the normal range of movement, then using a sudden force creating a release accompanied by an audible sound. Other procedures in the chiropractic therapy include giving nutritional and dietary recommendations, encouraging physical fitness and exercise, Trigger Point Therapy and postural advice.