Coffee dialates the main bile duct, and the liver dumps toxins, which allow it to detoxify more efficiently, and the blood is cleaner, the body is cleaner; the liver energy is boosted, making you feel better than before.
You could say it is like a natural high; I wouldn't say euphoria, but a noticiable sense of well being.
Like em, but I onlt do them a couple times a week for periodic sessions.