Friend, christian fasting is evident in the early church. In the Book of Acts we read the following "And Cornelius said, Four days ago I was fasting until this hour; and at the ninth hour I prayed in my house, and, behold, a man stood before me in bright clothing" Acts 10:30. We see angelic attention.

It is recorded in Mathew 4:2 talking of Jesus "And he fasted forty days and forty nights, and afterward he was hungry." Once Jesus was asked why John's disciples and the disciples of the Pharisees fasted regularly and not those of Jesus. Jesus answered by saying ""Can the wedding guests mourn as long as the bridegroom is with them? The days will come, when the bridegroom is taken away from them, and then they will fast." Mathew 9:15 Once also Jesus found His disciples having difficulty casting a demon out of a possessed child; He told them "this kind can come forth by nothing, but by prayer and fasting" Mark 9:29.
We also read in Acts 13:2. As they ministered to the Lord, and fasted, the Holy Ghost said, Separate me Barnabas and Saul for the work whereunto I have called them" The early disciples practised and believed in prayer and fasting we too shoulld.