A massage is not only a kind of therapy, which relaxes the patient. There are a lot more effects by the touch of a massage-therapist.
A well done a massage can
- increase the blood flow and metabolism of tissue and muscle
- influences tissue adhesions, which can cause disfunction and pain
- Lower muscle tones 
 B. Reichert et. al. 2015. Massage-Therapy, Stuttgart. Georg Thieme Verlag , p. 27-29.