This is actually a common question. To best answer whether we will eat, drink, and go to the restrooms in heaven, let us see what the Bible has to say about these maters:
Jesus ate after the resurrection
Jesus proved to His disciples that His resurrected body had flesh and bone and that He was not a spirit when He ate with them. He said, “See My hands and My feet, that it is I Myself; touch Me and see, for a spirit does not have flesh and bones as you see that I have.” And when He had said this, He showed them His hands and His feet. While they still could not believe it because of their joy and amazement, He said to them, “Have you anything here to eat?” They gave Him a piece of a broiled fish; and He took it and ate it before them” (Luke 24:39-43).
The Marriage Supper of the Lamb
The redeemed will certainly eat and drink in heaven. They will first eat and drink at the great banquet that God will prepare for them which is called the Marriage Supper of the Lamb (Revelation 19:7-9). Jesus said, “I have earnestly desired to eat this Passover with you before I suffer; for I say to you, I shall never again eat it until it is fulfilled in the kingdom of God.’ And when He had taken a cup and given thanks, He said, ‘Take this and share it among yourselves; for I say to you, I will not drink of the fruit of the vine from now on until the kingdom of God comes’” (Luke 22:15–18). That’s the final celebration of deliverance from sin in the kingdom of “glory.”
The Tree of Life
Also, we read in the book of Revelation that the tree of life that existed originally in the garden of Eden (Genesis 2:9) will be in heaven. The fruit of this tree granted Adam and Eve life (Genesis 3:22-24). And in the New Earth, this tree will enable people to live forever. The tree of life will have “twelve kinds of fruit, yielding its fruit each month. The leaves of the tree were for the healing of the nations” (Revelation 22:2).
The redeemed will plant different trees and eat of their fruits
And beside the tree of life, the redeemed will eat other fruits for “they shall build houses, and inhabit them; and they shall plant vineyards, and eat the fruit of them” (Isaiah 65:21). Life in the new earth will be similar to the life that man lived in Eden before sin. Thus, in the New earth, there will be all the pleasures of Eden of old. There will be trees, delicious fruits, and beautiful homes.
Will there be restrooms in heaven?
The Bible doesn’t answer this question directly but it does confirm that the bodies of the redeemed will be perfect. The Scriptures declare that “when He appears, we will be like Him” (1 John 3:2). For He “will transform our lowly body that it may be conformed to His glorious body, according to the working by which He is able even to subdue all things to Himself” (Phil 3:21). Paul indicates that the bodies of the redeemed will ultimately be conformed to that of Christ.
And in addition to the perfect bodies of the redeemed, there will be also perfect food. All things will be free from any trace of sin and decay. So, we can conclude that anything that the redeemed will eat will be perfectly absorbed and nothing will need to be eliminated. Thus, there will be no need for restrooms in heaven. The life to come will far exceed our imaginations. “Eye has not seen, nor ear heard, nor have entered into the heart of man the things which God has prepared for those who love Him” (1 Corinthians 2:9).
In His service,