Abstract: An exercise device designed to strengthen the entire body, with particular focus on the upper body. The device facilitates the strengthening of the core, chest, back, shoulder, and arm muscles, and in particular muscles that move the core in the transverse plane. The device consists of two hemispherical shells, both of which have handles attached via risers. This allows the device to be gripped either by the spherical surfaces, by the handles, or a combination thereof. The hemispheres are attached to each other by means of a shaft with a variable braking mechanism. The braking mechanism can provide levels of rotational resistance from almost zero to virtually impossible to rotate, with the resistance level visibly indicated on the exterior of the device. The resistance level is changed by repeatedly rotating the two halves against each other in one direction or the other.

Abstract: An exercise or fitness device designed to strengthen the entire body, with particular focus on the upper body. The device facilitates the strengthening of the core, chest, back, shoulder, and arm muscles, and in particular those muscles that move the core in the transverse plane. The device consists of two hemispherical shells, both of which have handles attached via risers. This arrangement allows the device to be gripped either by the spherical surfaces, by the handles, or a combination thereof. The two hemispheres are attached to each other by means of a shaft with a variable braking mechanism. The braking mechanism can provide levels of rotational resistance from almost zero to virtually impossible to rotate, with the resistance level being visibly indicated on the exterior of the device. The resistance level is changed by repeatedly rotating the two halves against each other in one direction or another.