A bed is a piece of furniture used mainly for sleeping and resting. It usually consists of a flat, horizontal surface, often with a mattress on top for comfort. Beds come in various sizes, such as single, double, queen, and king. They can be made from different materials including wood, metal, or a combination of both. The frame of the bed may have a headboard and a footboard for added style and functionality. Besides sleeping, beds can also be a place for relaxation, reading, or simply unwinding after a long day. Some beds even have built - in storage drawers underneath to save space.