Ergonomics, ur guh NOM ihks, is the science of designing machines, objects, and environments to match the physical and psychological needs of human beings. One example of ergonomic design is a type of computer keyboard that features special shaping and support to prevent strain on hands and wrists. Such strain can lead to muscle or nerve damage when people spend long hours typing. The most widespread use of ergonomics is in workplaces. Many ergonomic products are also used in homes. Ergonomics is also known by the terms human factors engineering and human engineering.