Every person 14 years of age or older must abstain from meat (and items made with meat) on Ash Wednesday, Good Friday, and all the Fridays of Lent.

On all other Fridays outside of Lent, those aged 14 years of age or older must abstain from meat unless he or she substitutes some other form of penance instead of abstaining from eating meat. 

Every person between the age of 18 and 59 must fast on Ash Wednesday and Good Friday.