What is the importance of the discovery of blood circulation by...

Early Greeks and Indian Ayurveda system of medicine believed that a person's health was determined by the balance of certain "humors" in the body, and that persons with "black bile" belonged to hot personality and would have fevers.William Harvey's discovery of blood circulation disproved the "good humor" hypothesis of health by demonstrating normal body temperature in persons with black bile using a thermometer.In later years, biology stated that mind influences, through neural system and endocrine system, our immune system and that our immune system maintains our health. Hence, mind and mental state can affect our health