There are two eras that are available in the afterlife for people’s souls. The first era occurs after one’s life in the physical world, when one’s soul ascends to its spiritual paradise in the heavenly realms. (If it merits, this may happen immediately after the person dies, or if not, it may happen after a period of suffering in Gehinom, which brings about the purification of the soul from its unrepented sins.) In the spiritual paradise, there is no body or physical form. There is only the souls of the righteous alone, without body, similar to the ministering angels. Since there is no physical form, there is neither eating, drinking, nor any of the other bodily functions of the physical world.
Do not think lightly of this good, by imagining that the heavenly reward for a person’s observing his commandments and following the paths of God’s Truth is for him to eat and drink good foods, have intercourse with beautiful forms, wear garments of linen and lace, dwell in ivory palaces, use utensils of gold and silver, or other similar ideas, as conceived by those who are foolish (Seven Gates of Righteous Knowledge by Rabbi Moshe Weiner and Dr. Michael Schulman, Ask Noah International, 2017, p 173).