This pressure can be increased by simply leaning harder onto your edge while your body is in a tall leverage position. Think of your body as a long lever, or as the handle of a shovel wedged under a rock. The longer the lever or shovel handle, the easier it is to lift the rock. Now cut that shovel handle in half and try to lift the rock. You will discover that you have to apply twice the force to lift the same rock. When you are in a tall edging position, you are like the long-handled shovel. Your body, however, has a natural tendency to hinge at your waist. When you break at the waist while edging, you cut your leverage in half, like the short-handled shovel.