Hi, Thanks for raising such a refreshingly new question.   In general, on a macro level, hospitals are considered YIN locations. Frankly, all of us (doctors and nurses included) have a reasonable level of personal AURA to protect ourselves from YIN elements.   1. Nurses and physicians are in constant motion, generating active Qi. 2. Patients fall into several categories:   - Some patients are frail and weak, and these individuals tend to have more YIN.   - The