Ergonomics refers to designing the workplace to fit the worker in order to prevent injury and illness, make the job easier, and increase comfort. There are two main categories of ergonomic factors - environmental factors like lighting, noise, and temperature, and physical stressors that place strain on the body like repetitive motions and awkward postures. Simple adjustments to a workstation like using a wrist rest, adjusting a chair or monitor height, and taking regular breaks can help reduce physical stress and prevent cumulative trauma disorders.