Humans, and other animals, think through physical brains, and thinking is a vibration. When we think—and we think all of the time, day and night, because energy does not rest—our brains produce electrical impulses known as brain waves. These waves, in turn, produce cycles called alpha, beta, theta, and delta: from wide-awake, or outer consciousness, to a deep sleep.
While in the alpha state, we can become one with our inner self (spirit). Alpha is the state conducive to relaxation, peacefulness, gaining knowledge and wisdom, and especially for prayer and meditation. In other words, it promotes creative thought and that is the God in us.