What is fasting and why should I do it?
The answer to this was beautifully given by Pope Benedict XVI this year in his general audience of Ash Wednesday. Here are some of the highlights:
“Fasting means abstinence from food but includes other forms of privation for a more modest life. However, all this is not yet the full reality of fasting: it is an outer sign of an inner reality, of our commitment, with God’s help, to abstain from evil and to live by the Gospel. Those who are unable to nourish themselves with the word of God do not fast properly.”
“St Augustine said that fasting and almsgiving are “the two wings of prayer” which enable it to gain momentum and more easily reach even to God. He said: ‘In this way our prayers, made in humility and charity, in fasting and almsgiving, in temperance and in the forgiveness of offences, giving good things and not returning those that are bad, keeping away from evil and doing good, seek peace and achieve it. On the wings of these virtues our prayers fly safely and are more easily carried to Heaven, where Christ our Peace has preceded us” (Sermon 206, 3 on Lent: PL 38, 1042).”
The Church defines this as one full meal in addition to two smaller meals, which should, together, not equal a full meal. Liquids and medicine do not apply.
Can I still fast if I am not able follow these guidelines?
Of course! These are the norms for fasting (they are only binding for Catholics (ages 18-59) on prescribed fasting days) but a person may fast more or less strictly depending on his state of life. God is pleased with whatever we can offer as long as it is done with love! Remember, the passage from Hosea: "For I desired mercy, and not sacrifice: and the knowledge of God more than holocausts." (Hosea 6:6) On days of fasting, we should also perform acts of mercy, denying our own wants and needs (be it emotional, or physical) in order to attend to the needs of others.