A great poem in World Literature, Dakshinamurti Stotra reveals the Poet and the Mystic in Sri Sankaracarya in unison at the highest altitude of his being.
Work a little harder at meditation and it comes. You do not feel the body or anything else. When you come out of it after the hour, you have had the most beautiful rest you ever had in your life. That is the only way you ever give rest to your system.
-Swami Vivekananda