Sub-health refers to non-disease and unhealthy state, which is a sub-health state (meaning sub-health) and a state between health and disease, so it is also called sub-health, third state, intermediate state, wandering state and gray state. The World Health Organization calls the state in which the body has no organic pathological changes but some functional changes "the third state", and it is called "sub-health state" in China.
Lack of concentration and difficulty in controlling one's emotions, etc. All belong to sub-health state,