Movement Instructions:

• Begin by sitting upright in a chair facing forward in a neutral
  position and rest your hands on either side of body.

• Move your buttocks as far back in the chair as possible.

• Lean forward to place the lumbar roll (towel, pillow, etc.) right
  above the top of the buttocks.

• Keeping the lumbar roll in place, lean comfortably against the
  back of chair, arching the lower back slightly.

• Sustain the corrected position as long as possible.