Repetitive Strain Injury (RSI) is a term used to describe an injury caused by prolonged repetitive movements. This condition can be very painful and can limit a person's ability to use their affected body parts. Synonyms for RSI include repetitive motion injury, overuse injury, cumulative trauma disorder, work-related musculoskeletal disorder, and occupational overuse syndrome. These terms are used interchangeably by health professionals depending on the context. Regardless of the term used, they all refer to the same condition and should be taken seriously as the first sign of RSI. To avoid these injuries, it is essential to take regular breaks, stretch regularly, and maintain good posture.