ACCORDING TO THE PRESENT INVENTION, A FOOT EXERCISING DEVICE (10) ASSUMES ESSENTIALLY THE FORM OF A PLASTIC HOLLOW BOX WITH A TRIANGULAR CROSS SECTION. THE TRIANGULAR CROSS SECTION IS FORMED BY A FIRST SIDE (1), A SECOND SIDE (2) AND A BASE SIDE OR UPRIGHT SIDE (3) OF THE BOX. ONE EDGE OF THE FIRST SIDE (1) AND ONE EDGE OF THE SECOND SIDE (2) MEET TO CONSTITUTE THE APEX OF THE TRIANGULAR CROSS SECTION. THE FIRST SIDE (1) AND THE SECOND SIDE (2) OF THE BOX INCLUDE A FIRST INCLINED STEPPING BOARD (11) AND A SECOND INCLINED STEPPING BOARD (12), RESPECTIVELY. THE BASE SIDE OR UPRIGHT SIDE (3) KEEPS THE OPPOSITE EDGES OF THE FIRST SIDE (1) AND THE SECOND SIDE (2) APART, AND PROVIDES THE NECESSARY INCLINATION OF THE FIRST AND SECOND INCLINED STEPPING BOARDS (11, 12). THE ANGLE OF INCLINATION IS RELATIVE TO THE GROUND. AN EMPTY CAVITY IS CENTRALLY PROVIDED IN THE PLASTIC BOX WHEREBY THE WALL STRUCTURES OF THE EMPTY CAVITY PROVIDE STRUCTURAL RIGIDITY TO THE BOX. THE SURFACE OF EACH INCLINED STEPPING BOARD (11, 12) IS INTEGRALLY PROVIDED WITH A GRID OF PROTRUSIONS (13). EACH PROTRUSION (13) ASSUMES A TRUNCATED PYRAMID SHAPE. THE SURFACE OF EACH INCLINED STEPPING BOARD (11, 12) IS ALSO CHEMICALLY COATED TO RELEASE NEGATIVE ION AND FAR INFRARED RAYS.
