A mini-plunger as a teaching aid

Moving back and forth or sideways with the plunger close to the navel area demonstrates how the dan tien moves us. Noting that the handle remains the same distance from the floor throughout the movement helps us visualize that one must move at the same level, not return over a speed bump. The image of the pelvis as a basin that contains precious fluid reminds us to move softly so as not to spill it, either by leaning or sloshing.