Pray this prayer that you may abstain from both food and sin.
Catholics often fast and abstain from certain foods during Lent, but also throughout the year, such as on Fridays every week.
While fasting from food can have some physical benefits, it is meant to remind us of the need to "fast from sin."
Here is a Collect from Ember Wednesday, a day which was traditionally a day of fasting in the Catholic Church's liturgical calendar.