Hindu yoga philosophy describes four states of consciousness that can be experienced by human beings – waking, dreaming, deep sleep, and a fourth state, which is the background that underlies the previous three. However, when interpreted in the light of Theosophical teachings, these states provide a map of the different planes of consciousness that extend beyond our physical experience. In this talk, Pablo Sender will explore the philosophical and metaphysical aspects of the subject, forming the foundation for a Theosophical practice of meditation.