There was a time in my life that I set aside one day a week for fasting. This I did alone and quietly. There was another time in my life that a prayer group of women decided to fast on Wednesdays because on that evening we met to pray for our marriages.

It is a Biblical Discipline that you may want to consider. The Crazy Idea of Fasting in ’09 :: Desiring God. Terrific article with complete Biblical references.