Meditation usually refers to a state in which the body is consciously relaxed and the mind is allowed to become calm and focused. Several major religions include ritual meditation; however, meditation itself need not be a religious or spiritual activity. Most of the more popular systems of meditation are of Eastern origin, though there are also various forms of Christian, Jewish and Muslim meditation.

Meditation can help to balance a person's physical, emotional, mental and spiritual states. It has been used as an aid in treating stress, anxiety, pain management, and as part of an overall treatment for other conditions including hypertension and heart disease. Research shows that meditation decreases the heart rate, respiratory rate, oxygen consumption, and even decreases blood pressure.

The purposes for which people meditate vary almost as widely as practices. Meditation may serve simply as a means of relaxation from a busy daily routine; as a technique for cultivating mental discipline; or as a means of gaining insight into the nature of reality, or of communing with one's God. Many report improved concentration, awareness, self-discipline and equanimity through meditation.