Paul McCartney has been on a vegetarian diet for a long time (his youngest daughter is a vegan) and also practices Transcendental Meditation, which he learned from Maharishi Mahesh Yogi in the 1960’s.
Recently interviewed by film director David Lynch, who is also the founder of The David Lynch Foundation, which teaches children the practice of Transcendental Meditation, he explained how he went to see Maharishi at the prompting of George Harrison’s wife, Pattie Boyd.
Watch a portion of the interview Lynch did with McCartney on his discovery of Transcendental Meditation below: