In some parts of the Jewish world, men visit a special men's-only mikveh every week in preparation for Shabbat. Today, women as well as men undertake this custom, a physical enactment of the separation of the Sabbath from six other days of the week, a way to slow down and prepare body, mind, and spirit for a day of rest and renewal.
Immersing before major Jewish holidays is another time-honored custom that has been embraced anew. Mayyim Hayyim has created ceremonies for use prior to Rosh Hashanah, Yom Kippur, and Passover.