"Those who resort to tea and coffee for stimulation to labor, will feel the evil effects of this course in trembling nerves and lack of self-control. Tired nerves need rest and quiet. Nature needs time to recuperate her exhausted energies. But if her forces are goaded on by use of stimulants, there is, whenever this process is repeated, a lessening of real force. For a time more may be accomplished under the unnatural stimulus, but gradually it becomes more difficult to rouse the energies to the desired point, and at last exhausted nature can no longer respond" {CD 422.1}. The question was settled over a hundred years ago. Yes, it is time to quit coffee for good.