“It is not suited to everyone to follow a severe rule of abstinence from everything, or to deprive himself of everything which can serve for the easing of weakness.
One should make use of food daily to the extent that the body, fortified, may be the friend and assistant of the soul in the practice of virtue. Otherwise, the soul may weaken because it is exhausted.
On Wednesdays and Fridays, especially during the four fasts, eat once a day, and the angel of the Lord will remain with you.”
– St. Seraphim