And after He had fasted forty days and forty nights, He [a]then became hungry. 3 And the tempter came and said to Him, “If You are the Son of God, … Matthew 4:3
Some acceptable churches do not fast at all. I went to the opposite extreme for a while. One time I went over 10 days on just water. (Learned later that borderline diabetics should not fast. No wonder I was so grumpy and staggered when tired)
All this to say that fasting is normal – if done for the right reason and with some common sense.
My Mom used to say that discerning right and wrong is often a matter of moderation.