(1) the poor who live on alms;
(2) sick and frail persons;
(3) convalescents who are returning to their strength;
(4) pregnant women, and mothers who are nursing their children;
(5) persons who perform hard labor;
(6) children who have not completed their seventh year of age;
(7) Persons have completed their 59th year of age with permission of their pastor or confessor.
The manner of observing the fast may be found here.