Energy is dissipated into the air body heat energy can also be used to evaporate water.
Energy is needed to convert liquid to gas, this energy comes from body heat, and as heat is used to convert liquid water to vapor, heat is lost and the body becomes cooler. This flow is one-way, body cannot be heated by converting water vapor on the body surface to a liquid. It is used to drive cellular reactions, or produce heat. All life requires source of energy to carry out life's processes ultimate source of energy is the sun light energy is trapped by plants and is used to produce carbohydrate that then can be used by an herbivore , an animal that derives its energy from plant material. An herbivore in turn may be eaten by a carnivore , an animal getting its energy from eating animal material.