An exercise device is described. An exercise device including a body, the body having a top, a bottom, a first end located at one edge of the body, a second end located at an opposite end of the body, and first and second sides extending between the first and second ends; one or more wheels; and an energy storage device applying resistive and restoring force to the wheel. Optionally, a shaft can be present that rotationally locks two or more of the wheels.

An exercise device is described which includes a platform having a first end and a second end opposite the first end; first and second wheels, wherein the first wheel is positioned proximate the first end and the second wheel is positioned proximate the second end and the first and second wheels are configured to roll across a surface as the exercise device is displaced along the surface; a first motor configured to apply a first torque to the first wheel where the magnitude of the first torque is related to the distance of the exercise device from a zero position and the direction of the first torque urges movement of the exercise device toward the zero position. Versions are also described with more wheels and more motors.

A system and method of using two exercise machines for performing a wide range of exercise movements that utilize both of the exercise machines in concert. The system and method of using two exercise machines generally includes first exercise machine and a second exercise machine which are used in concert to perform a wide range of exercise movements. The first exercise machine may include a track, a carriage movably connected to the track, and an end platform. The second exercise machine may include its own separate track, a carriage movably connected to the track, and an end platform. The exercise machines may be positioned side-to-side in parallel orientation such that an exerciser may perform various exercise moves by positioning different limbs on the respective carriages, end platforms, and/or tracks of the exercise machines, in addition to the surface underlying the exercise machines.

A track exercise device with at least first and second substantially parallel tracks, and first, second, third, and fourth movable platforms. The first and third movable platforms are movable on the first track, and the second and fourth movable platforms are movable on the second track. Transverse attachments selectively and respectively attach the first and second movable platforms together on the first and second tracks and the third and fourth movable platforms together on the first and second tracks. Longitudinal attachments selectively and respectively attach the first and third movable platforms together on the first track and the second and fourth movable platforms together on the second track. A tilting adjustment selectively provides for inclined or flat movement of the first, second, third, and fourth movable platforms.

An exercise device is described. An exercise device includes a body, the body having a top, a bottom, a first end located at one edge of the body, a second end located at an opposite edge of the body, and first and second sides extending between the first and second ends; one or more wheels; and an energy storage device applying resistive and restoring force to the one or more wheels. Optionally, a shaft can be present that rotationally locks two or more of the wheels.

An inclined exercise apparatus may include a support frame, pedals and arm supports for a user. The angle of incline of the inclined exercise apparatus may be adjusted to be increased for a decreased level of difficulty and decreased of an increased level of difficulty. The inclined exercise apparatus may include a chest support for supporting a user's chest. The inclined exercise apparatus may include arm supports and hand grips so that a user can adjust their body position while using the inclined exercise apparatus.

There is provided a plank exercise device including a support portion adapted to receive arms or hands of a person and adapted to receive a display device, a destabilizer connected to the support portion, and a stationary base adapted to hold the destabilizer.

There is provided a plank exercise device including a support portion adapted to receive arms or hands of a person and adapted to receive a display device, a destabilizer connected to the support portion, and a stationary base adapted to hold the destabilizer.