http://infogalactic.com/info/Three_Hail_Marys
> Three Hail Marys is a traditional Roman Catholic devotional practice of reciting three Hail Marys as a petition for purity and other virtues. Believers recommended that it be prayed after waking in the morning, and before going to bed, following the examination of conscience at night. This devotion has been recommended by St. Anthony of Padua, St. Alphonsus Liguori, St. John Bosco and St. Leonard of Port Maurice.
A short and simple religious practice for those interested.
Recitation of memorized religious poetry or hymns is an effective method of combating Satan.