OHHH got you. I was talking about fasting in general, but yeh, that would present an issue if for the reasons of this passage. I fast more because I understand it as a commandment. I was reading some other reasons what fasting helps with:
22 Encouraging Bible Verses About Fasting And Prayer
God’s intervention
1. 2 Samuel 12:16 David pleaded with God for the child. He fasted and spent the nights lying in sackcloth on the ground.
Repentance
2. 1 Samuel 7:6 When they had assembled at Mizpah, they drew water and poured it out before the LORD. On that day they fasted and there they confessed, “We have sinned against the LORD.” Now Samuel was serving as leader of Israel at Mizpah.
3. Daniel 9:3-5 So I turned to the Lord God and pleaded with him in prayer and petition, in fasting, and in sackcloth and ashes. I prayed to the LORD my God and confessed: “Lord, the great and awesome God, who keeps his covenant of love with those who love him and
keep his commandments, we have sinned and done wrong. We have been wicked and have rebelled; we have turned away from your commands and laws.”
4. Joel 2:12-13 “Even now,” declares the Lord, “return to me with all your heart, with fasting and weeping and mourning.” Rend your heart and not your garments. Return to the Lord your God, for he is gracious and compassionate, slow to anger and abounding in love, and he relents from sending calamity.
5. Jonah 3:5-9 The Ninevites believed God. A fast was proclaimed, and all of them, from the greatest to the least, put on sackcloth. When Jonah’s warning reached the king of Nineveh, he rose from his throne, took off his royal robes, covered himself with sackcloth and sat down in the dust. This is the proclamation he issued in Nineveh: “By the decree of the king and his nobles: Do not let people or animals, herds or flocks, taste anything; do not let them eat or drink. But let people and animals be covered with sackcloth. Let everyone call urgently on God. Let them give up their evil ways and their violence. Who knows? God may yet relent and with compassion turn from his fierce anger so that we will not perish.”
Guidance
6. Acts 14:23 Paul and Barnabas also appointed elders in every church. With prayer and fasting, they turned the elders over to the care of the Lord, in whom they had put their trust.
7. Acts 13:2-4 While they were worshiping the Lord and fasting, the Holy Spirit said, “Set apart for me Barnabas and Saul for the work to which I have called them.” So after they had fasted and prayed, they placed their hands on them and sent them off. The two of them, sent on their way by the Holy Spirit, went down to Seleucia and sailed from there to Cyprus.
Worshiping
8. Luke 2:37 Then she lived as a widow to the age of eighty-four. She never left the Temple but stayed there day and night, worshiping God with fasting and prayer.
Strengthen prayers
9. Matthew 17:20-21 And He said to them, “Because of the littleness of your faith; for truly I say to you, if you have faith the size of a mustard seed, you will say to this mountain, ‘Move from here to there,’ and it will move; and nothing will be impossible to you. “But this kind does not go out except by prayer and fasting.”
10. Ezra 8:23 So we fasted and earnestly prayed that our God would take care of us, and he heard our prayer.
Mourning
11. 2 Samuel 1:12 They mourned and wept and fasted all day for Saul and his son Jonathan, and for the LORD’s army and the nation of Israel, because they had died by the sword that day.
12. Nehemiah 1:4 When I heard these things, I sat down and wept. For some days I mourned and fasted and prayed before the God of heaven.
13. Psalm 69:10 When I wept and humbled my soul with fasting, it became my reproach.
Other ways to fast
14. 1 Corinthians 7:5 Defraud ye not one the other, except it be with consent for a time, that ye may give yourselves to fasting and prayer; and come together again, that Satan tempt you not for your incontinency.
Humility
15. Psalm 35:13-14 Yet when they were ill, I put on sackcloth and humbled myself with fasting.
When my prayers returned to me unanswered, I went about mourning as though for my friend or brother. I bowed my head in grief as though weeping for my mother.
16. 1 Kings 21:25-27 (There was never anyone like Ahab, who sold himself to do evil in the eyes of the Lord, urged on by Jezebel his wife. He behaved in the vilest manner by going after idols, like the Amorites the Lord drove out before Israel.) When Ahab heard these words, he tore his clothes, put on sackcloth and fasted. He lay in sackcloth and went around meekly.