Our Book of Common Prayer calls us to observe Good Friday as a Fast Day, cutting down on both the quality and quantity of food. It is important to remember that the observance of fasting is always mitigated by practical concerns of health and age. Other acts of discipline may also be appropriate, according to your own spiritual rule of life. The Great Liturgy of the Passion includes prayers, worship, reading of the Passion, Devotion to the Cross, and more.