From my understanding, our glorified bodies will be restored to proper condition, and we will no longer have any physical needs such as the need for food and drink. Why was Jesus scarred and why did he eat after his resurrection?
He retained the marks of the crucifixion to show those who saw Him that it was truly Himself. He ate to show them, as He said, the He was not merely a spirit; He was flesh and blood.
Fr, Vincent Serpa, O.P.