What ancient people considered medicine to be both an art and a profession? *

Galen was the originator of the experimental method in medical investigation, and throughout his life dissected animals in his quest to understand how the body functions. Galen was influenced by Hippocrates's idea of the Four Humours (the theory that the body was made up of four liquids, and He developed this by introducing the idea of using opposites to treat illnesses.

F-frequency
i-intensity
t-time
t-type