Definition:

An applied science concerned with theory, principles, and data to optimize the efficiency and safety of interactions between people and systems.

Guidelines:

Ergonomics can be integrated into the lives of those with sedentary occupations as well as those with physically-intensive occupations, those who frequently use computers at a desk space, and those who practice generally poor posture. Due to this versatility, there are no set guidelines; you can practice ergonomics in a way that adheres to your habits, lifestyle, and desires to change.