Derived from ancient Chinese philosophy, Shen relates to the heart-mind connection, encompassing a person's emotions; and the spiritual element of a person's psyche or "spirit". In Chinese Medicine, Shen is one of "Three Treasures"  along with Jing & Qi. 

Calming the Shen is a fundamental principle of Chinese Medicine. As the mind, body and spirit are interconnected, Chinese Medicine principles are based on the premise that true healing can only exist when all three aspects of a person are supported.