Whether it is requisite for fasting that one eat but once?

Objections

Objection 1 : It would seem that it is not requisite for fasting that one eat but once. For, as stated above (Article [2]), fasting is an act of the virtue of abstinence, which observes due quantity of food not less than the number of meals. Now the quantity of food is not limited for those who fast. Therefore neither should the number of meals be limited.
Objection 2 : Further, Just as man is nourished by meat, so is he by drink: wherefore drink breaks the fast, and for this reason we cannot receive the Eucharist after drinking. Now we are not forbidden to drink at various hours of the day. Therefore those who fast should not be forbidden to eat several times.
Objection 3 : Further, digestives are a kind of food: and yet many take them on fasting days after eating. Therefore it is not essential to fasting to take only one meal.