Chairs are tools designed to rest the body by placing us in certain postures, particularly when performing tasks. Good fitting chairs offer no distraction and allow individuals to focus on the job at hand.

Conversely poorly fitting chairs are not only annoying and distracting but stress the body and may lead to health problems. So it is important to have a comfortable fitting chair!

As office settings and desk/computer type work is common on a university campus, we will focus more in this area.
We all come in different shapes and sizes and so this needs to be accounted for to maintain a good posture.
Height Adjustability

Usually a lever changes a gas-cylinder pressure allowing the chair to go up and down. This lever is almost always on the right side (under the seat) of the chair.  If you do not have a lever some older chairs adjust on a thread and so have to be spun (usually clockwise to go up).
This is the first thing to adjust when sitting in the chair.

Seat Depth

Some chairs come with seat depth adjustability. This accommodates for the length of the thigh and helps distribute pressure under the legs. It also keeps the back in contact with the back rest while avoiding pressure behind the knees.

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