First of all, massage exfoliates the cells of the outer layer of the skin - the epidermis, which improves skin respiration, the release of sweat, and sebum, which in turn protects the skin from the harmful effects of the environment.
The processes of metabolism in different layers of the skin are accelerated, the processes of rejuvenation and cell renewal take place, the skin becomes firm and elastic.
There are multiple nerve receptors on the skin, so exposure to the skin affects the functioning of the nervous system, both central and peripheral. And what kind of influence it is, exciting or calming, it will depend on the massage technique.
Also, from the mechanical irritation of the skin receptors in the reflex zones, the work of the internal organs will change. It is actively used to treat various diseases, and this method of treatment eliminates the negative effects of chemicals, both from pills and injections.