Fasting is also practiced for 4 reasons: 1. Because, as you said, it is the least of sacrifice we can do to honour God by imitating His example. 2. Because it is a way for us to practice and prove that we can have the obedience for abstention that God expects from us, and that Adam & Eve lacked. 3. Because it is required by the Holy Canons of the Orthodox Church, and...