Fasting and Abstaining from meat are to be observed on Ash Wednesday and Good Friday. More details about Lenten fasting and abstinence requirements are below.
The law of fasting requires Latin Rite Catholics from the 18th birthday to the 59th birthday (i.e., have not yet reached their 60th year) to reduce the amount of food eaten from normal. The Church defines this as one meal a day and two smaller meals which, if added together, would not exceed the main meal in quantity. Fasting is obligatory on Ash Wednesday and Good Friday.
All persons who have completed their 14th year are bound by the law of abstinence. During Lent abstaining from meat on Fridays is obligatory.
Those who are excused from fast and abstinence, besides those outside the age limits, include the sick or those with some other medical reason, the frail, and pregnant or nursing women.