Nuns are cloistered Dominican Sisters. Their lives most closely resemble the communities founded by St. Dominic to pray for the success of the holy preaching of the Order. The nuns profess solemn vows and usually enter and remain in the same monastery throughout their lives. Their days are marked by silence, the necessary climate for contemplation and continuous prayer. Nuns are also authors, supporters of the missions, and ministers to the poor. They provide spiritual counsel and their monasteries are power houses of prayer. Many support themselves by producing hosts and vestments for Mass and other religious articles. The Liturgy of the Hours, as well as Mass and devotions such as perpetual adoration are the framework of their days.