Fasting is to be observed by all 18 years of age and older, who have not yet celebrated their 59th birthday. On a fast day one full meal is allowed. Two other meals, sufficient to maintain strength, may be taken according to each one's needs, but together they should not equal another full meal. Eating between meals is not permitted, but liquids, including milk and juices, are allowed. 

Asbtinence is observed by all 14 years of age and older. On days of abstinence no meat is allowed. Note that when health or ability to work would be seriously affected, the law does not oblige. 

Fasting, almsgiving, and prayer are the three traditional disciplines of Lent. The faithful and catechumens should undertake these practices seriously in a spirit of penance and of preparation for baptism, or of renewal of baptism at Easter. 

Ash Wednesday and Good Friday  are days of fast and abstinence throughout the universal church. Fridays of Lent are also compulsory days of abstinence throughout the universal church. In Canada, Catholics may substitute an act of charity in place of abstinence. However, it is strongly encouraged that some form of penitential discipline be undertaken.