At SouthPoint, we encourage fasting corporately for 21 days each year in the month of January & February. This is part of a season of high-intensity prayer as a church family. You may also opt to fast at other times during the year for your own spiritual development. It's very typical to fast a single meal, a whole day, or three days or more. The timing of your fast is not as important as the strength of your focus on Him as you fast.
More information about prayer and fasting can be found here by clicking the link below.