Could He eat? Yes. Did He need to eat? No. Could He breathe? Yes. Did He need to breathe? No. I don’t think His Resurrected Life was dependent on metabolic processes. Did He need hemoglobin? Apparently not. It was His same body, but perfected, glorified, unbound by Time and Space.
Before you continue to agree with Sontagged, know that she is asserting that the resurrected Jesus had and needed blood coursing through his body to sustain the life in His body.