Height adjustable and Sit Stand desks or attachments allow a portion or whole of the desk space to be elevated or lowered to suit sitting and / or standing positions. At their most basic, some height adjustable desks can have adjustable feet to raise and lower the desk. More recently, the reference to height adjustable desks and sit stand desks is more about the ability to adjust more to a standing height.
Height Adjustable Desks
These are desks that typically adjust with a manual winder, requiring exerted effort to raise and lower the desk. These are not sit stand stations as they require an exerted force to wind the desks up and down and do not always support a standing posture. The ability to adjust them is limited to the number of times it can be wound up or down using the winding handle (see photo below). The recommendation is no more than once or twice a day, taking into consideration pre-existing health conditions and not overriding existing medical advice.