fasting is simply a denial of self, a way to crucify the flesh and to show God you mean business, for whatever reason your doing it for. But in the end, your motive is what the Father looks at (the heart).
You can fool everyone, including yourself, but you cant fool God.
I believe fasting has much benefits in the physical, and certainly in the spiritual.
Proverbs 29:2, "...when the wicked beareth rule, the people mourn."
Acts 4:12, "Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved."
Hebrews 13:8, "Jesus Christ the same yesterday, and to day, and for ever."
Revelation 3:11, "Behold, I come quickly: hold that fast which thou hast, that no man take thy crown."
Matthew 28:20, "...I am with you alway, even unto the end of the world. Amen."