The definition of ergonomics probably isn’t what you might guess based on how you’ve seen it used. The word actually refers to the study of peoples’ efficiency in their work environment. It has nothing to do with your back, spine or posture… at least, not in its plainest application.
How it relates to furniture — i.e., an ergonomic chair, ergonomic bed, etc — has to do with how efficiently the object works to provide the necessary support your body requires. Another way of thinking about it is this: the design of furniture has shifted, over time, to be less efficient in it’s most basic function. Ergonomic furniture is manufactured to reverse this trend and give your bod