Abstract: A new method of performing a side plank exercise uses a side plank exercise device in the shape of a spherical cap or a cone. The side plank exercise device includes a front end that is circular or oval. The side plank exercise device also includes a rear end tapered from the front end. The rear end is a spherical cap. The front end has a flat or a cavitary surface. The front end also includes two recesses for receiving a left shoe and a right shoe. The two recesses are two inches deep and also uneven in depth. Each recess further incorporates a grip at its bottom. The grip includes protruding lines or spherical caps. The device further includes an edge at the front end that extends outwardly from the front end. The edge includes an attachment point with a crossbar and an attachment cavity receiving the crossbar.

Abstract: A new side plank exercise device is in the shape of a spherical cap or a cone. The side plank exercise device includes a front end that is circular or oval. The side plank exercise device also includes a rear end tapered from the front end. The rear end is a spherical cap. The front end has a flat or a cavitary surface. The front end also includes two recesses for receiving a left shoe and a right shoe. The two recesses are two inches deep and also uneven in depth. Each recess further incorporates a grip at its bottom. The grip includes protruding lines or spherical caps. The device further includes an edge at the front end that extends outwardly from the front end. The edge includes an attachment point with a crossbar and an attachment cavity receiving the crossbar.

Abstract: A tilting inversion exerciser includes a stand having an axle, and a table rotatably attached to the axle of the stand, to support a user, a driving device attached to the table and having a reduction gearing coupled to the axle, to drive and rotate the table relative to the stand, and a control device for controlling the driving device to rotate the table relative to the stand. The stand includes a latch engaged with the axle, to secure the axle to the stand, and to prevent the axle from being rotated relative to the stand. The stand includes an apex-connecting plate to support the axle and having a hub to rotatably receive the axle. A switch may be disposed on the table, and actuatable by an actuator device, to position the table to the stand at selected angular position.