Stress position

A stress position, also known as a submission position, places the human body in such a way that a great amount of weight is placed on just one or two muscles. For example, a subject may be forced to stand on the balls of his feet, then squat so that his thighs are parallel to the ground. This creates an intense amount of pressure on the legs, leading first to pain and then muscle failure.

Compelling prisoners to assume specific positions is recognized as a form of torture, employed either to extract information or as a means of punishment.