Ergonomics can be defined simply as

Ergonomics can be defined simply as the
study of work. More specifically, ergonomics
is the science of designing the job to fit the
worker, rather than physically forcing the
worker’s body to fit the job.
Adapting tasks, work stations, tools, and
equipment to fit the worker can help reduce
physical stress on a worker’s body and eliminate
many potentially serious, disabling workrelated
musculoskeletal disorders (MSDs).
Ergonomics draws on a number of
scientific disciplines, including physiology,
biomechanics, psychology, anthropometry,
industrial hygiene, and kinesiology.