A brief nap is traditional on the Sabbath, both for its healing benefits and for the spiritual significance of having no work to do except to connect with the dreams of our souls. This sense of letting go in order to make room for holy energies is a central idea in Jewish, Sufi Muslim, Christian, Buddhist, Hindu, and Native American spirituality. When we sleep and dream, our souls have greater freedom to connect with the Divine.

Leonard Felder, The Ten Challenges