Jesus had been resurrected from the dead, which in my estimation is the brightest day in history, having followed by a few days the darkest day in history. Then He appeared to the eleven disciples, which was a crucial thing, for without witnesses to the resurrection who would preach it to the world, His resurrection would have been for naught.
After His dramatic appearance to the eleven, Luke records,
“But while they still did not believe for joy, and marveled, He said to them, ‘Have you any food here?’ So they gave Him a piece of a broiled fish and some honeycomb. And He took it and ate in their presence” (Luke 24:41-43).
While His body did not consume calories while in the grave, yet, from the time He ate the Passover meal to this moment, there is no record of Him having eaten. All His suffering would have used up great amounts of energy.
Also, this provided proof that His body had been raised from dead, and that this was not a ghost or spirit, nor had he borrowed someone’s body. This was Jesus of Nazareth, whom they had seen eat before, and so they knew His mannerisms and they could see that though He had been dead, He was alive again, and when they preached that to the world, nothing has ever been the same.