Quiet time, also stated as heart-to-heart time, or one-on-one time with the creator, is a regular individual session of Christian spiritual activities, such as prayer, private meditation, contemplation, worship of God or study of the Bible. The term "quiet time" or "sacred time" is used by 20th-century Protestants, mostly evangelical Christians. It is also called "personal Bible study" or "personal devotions". Rick Warren points out that it has also been called "morning watch" and "appointment with God".