Stop Wrecking Your Teeth. I find that most unfortunately, not all underlying causes of fatigue can be identified when the patient and I make a good effort to uncover the clues that lead to discovering the underlying cause of their fatigue. Recognize These Common Eye Conditions. Medically reviewed by John A. I have lived most of my life the rebound way. Lennon wrote the song at a Transcendental Meditation camp when he could not sleep; the Beatles had gone on a retreat to study with the Maharishi Mahesh Yogi in Rishikesh , India.