This sentence refers to the direct influence on human internal organs and body functions through different elements of music, such as rhythm, speed, tone and timbre.

This effect can be manifested as sedation, excitement, analgesia, regulating heart rate and lowering blood pressure.

Music can reduce the physiological response of respiratory system, cardiovascular system, endocrine system and immune system to stress, reduce heart rate and blood pressure, and reduce cortisol level in the body under stress, thus enhancing immunity. This is the enhancement in music therapy.