Wicking is the process by which moisture moves through a material, often against the force of gravity. This occurs due to capillary action, where liquid is drawn into small spaces within the material. Common examples of wicking can be found in fabrics like cotton and polyester, which are designed to pull sweat away from the skin, keeping the wearer dry. In nature, wicking is also observed in plants, where water travels from the roots to the leaves through tiny tubes called xylem. This process is essential for plant health, as it ensures that all parts receive the necessary moisture and nutrients for growth.