Not by bread alone
Man shall not live by bread alone, but by every word that proceeds out of the mouth of God.
Forty days without food, and the first temptation is the obvious one: you are hungry, you have power, make bread. His answer is that bread is not the only food, and that a person fed only on bread is starving in a way he cannot feel. Everyone who fasts discovers this. Under the hunger for food there is another hunger you had been feeding with meals so you would not have to feel it. The fast uncovers it. Then the question is what you will feed it with, and the answer is the word.
Today's practice
When hunger is loudest today, do not distract yourself. Open the gospels and read one paragraph as slowly as you can. Let it be the meal.
The fast
Daily fast. Eat from the Daniel table today: plants, grains, legumes, oil, water. See how much of what you usually eat you do not miss.
By the calendar, today is Day ?.