...On restriction...

For years, I have had students who have come to Pilates from a Yoga background. Some of these students take issue with the "tension" in my language. "Corseting/buttoning/lift"

... For every engagement of a muscle in the body to produce movement, there is a corresponding release of a muscle that performs the opposite movement...

By restricting breath movement in certain places (esp front ribs and belly) we are trying to encourage the inhalation to go into other places (collarbones/spine/shoulder blades and back ribs)