Trigger Point Therapy is a form of massage that uses sustained deep pressure into a specific area (a knot, or a trigger point) long enough to release the muscle spasm.
 

"Trigger Points" are often areas on the body that are tender due to damaged muscles. (You may experience a reoccurring spasm or kink that feels painful when aggravated.)   By locating and deactivating the "trigger points", the therapist can reduce spasms and induce new blood flow into the affected area.