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An exercise device comprises a frame, including a pair of arcuate rails having a central curved portion, a first end, and a second end. The pair of rails are disposed in fixed parallel relation with one another with a first end member interconnecting the first ends of the rails and a second end memb

An exercise device comprises a frame, including a pair of arcuate rails having a central curved portion, a first end, and a second end. The pair of rails are disposed in fixed parallel relation with one another with a first end member interconnecting the first ends of the rails and a second end member interconnecting the second ends of the rails. The exercise device further comprises a platform operatively connected to the frame for supporting a person thereon. The device may be oriented in various orientations including: 1) a rocking orientation wherein the curved portions of the pair of rails abut a surface on which the device is placed such that the device may move in a rocking motion relative to the surface and 2) a stationary orientation wherein the first end member and the second end member abut the surface on which the device is placed such that the device is stationary relative to the surface.

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What is claimed is: 1. An exercise device, comprising: (a) a frame, including, (i) a pair of spaced apart arcuate rails, each arcuate rail having a central curved portion, a first end, and a second end, (ii) a first end member interconnecting the first ends of the arcuate rails of the frame, and (i

What is claimed is: 1. An exercise device, comprising: (a) a frame, including, (i) a pair of spaced apart arcuate rails, each arcuate rail having a central curved portion, a first end, and a second end, (ii) a first end member interconnecting the first ends of the arcuate rails of the frame, and (iii) a second end member interconnecting the second ends of the arcuate rails of the frame; and (b) a platform configured to receive and support a person on the exercise device, the platform extending between and connected to the first and second ends of the pair of arcuate rails; (c) wherein, (i) the central curved portions of the pair of arcuate rails of the frame protract from a first support surface of the platform such that the central curved portions of the pair of arcuate rails of the frame are configured to support the platform on a floor in a configuration in which the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end members of the frame when a person is received and supported on the first support surface of the platform, (ii) the first and second end members of the frame protract from a second support surface of the platform such that the first and second end members of the frame are configured to support the platform on the floor in a configuration in which the exercise device is not prone to rocking motion relative to the floor when a person is received and supported on the second support surface of the platform, the first and second support surfaces being on opposite sides of the platform, and (iii) the first and second end members comprise a pair of hooks, each hook configured to releasably receive a resistance band. 2. The exercise device of claim 1,wherein the first and second end members comprise a pair of handles. 3. The exercise device of claim 1, wherein the first and second end members comprise two pairs of hooks, each hook configured to releasably receive a resistance band. 4. An exercise device, comprising: (a) a frame, including, (i) a pair of spaced apart arcuate rails, each arcuate rail having a central curved portion, a first end, and a second end, (ii) a first end member interconnecting the first ends of the arcuate rails of the frame, and (iii) a second end member interconnecting the second ends of the arcuate rails of the frame; and (b) a platform configured to receive and support a person on the exercise device, the platform extending between and connected to the first and second ends of the pair of arcuate rails; (c) wherein, (i) the central curved portions of the pair of arcuate rails of the frame protract from a first support surface of the platform such that the central curved portions of the pair of arcuate rails of the frame are configured to support the platform on a floor in a configuration in which the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end members of the frame when a person is received and supported on the first support surface of the platform, (ii) the first and second end members of the frame protract from a second support surface of the platform such that the first and second end members of the frame are configured to support the platform on the floor in a configuration in which the exercise device is not prone to rocking motion relative to the floor when a person is received and supported on the second support surface of the platform, the first and second support surfaces being on opposite sides of the platform, and (iii) the central curved portion of each respective arcuate rail is connected to the first and second ends of the respective arcuate rail such that the central curved portion is movable relative to the first and second end portions between, (A) a curved position, in which the central curved portions of the pair of arcuate rails of the frame protract from the first support surface of the platform such that the central curved portions of the pair of arcuate rails of the frame are configured to support the platform on a floor in a configuration in which the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end members of the frame when a person is received and supported on the first support surface of the platform, and (B) a release position, in which the central curved portions of the pair of arcuate rails of the frame protract from the second support surface of the platform such that the central curved portions of the pair of arcuate rails of the frame are not configured to support the platform on a floor. 5. The exercise device of claim 4, wherein the central curved portion of each respective arcuate rail is connected to the first and second ends of the respective arcuate rail such that the central curved portion is rotatable relative to the first and second end portions. 6. The exercise device of claim 4, wherein the platform extends between but is not directly connected to either of the arcuate rails of the frame. 7. The exercise device of claim 4, further comprising locking mechanisms configured to releasably lock the pair of arcuate rails in the curved position, and wherein each locking mechanism includes a button for releasing the arcuate rails for moving to the release position. 8. The exercise device of claim 1, wherein the central curved portions of the pair of arcuate rails of the frame protract from the first support surface of the platform such that the central curved portions of the pair of arcuate rails of the frame are configured to support the platform on a floor in a configuration in which the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end members of the frame, but is not prone to side-to-side rocking motion of the exercise device relative to the floor, when a person is received and supported on the first support surface of the platform. 9. The exercise device of claim 1, wherein each of the pair of spaced apart arcuate rails defines a side surface of the exercise device, each side surface being configured to support the exercise device on a floor in a configuration in which the exercise device is not prone to rocking motion relative to the floor and in which the platform extends generally orthogonally to a plane of the floor. 10. A method of exercising, comprising: (a) providing an exercise device, comprising: (i) a pair of spaced apart arcuate portions, (ii) a first end member interconnecting a first end of the pair of arcuate portions, (iii) a second end member interconnecting a second end of the pair of arcuate portions, (iv) a platform configured to receive and support a person on the exercise device, the pair of arcuate portions protracting from the platform such that the arcuate portions are configured to support the platform on a floor in a configuration in which the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end members, but is not prone to side-to-side rocking motion of the exercise device relative to the floor, and (v) a pair of resistance bands for exercising, each resistance band including an elongate body having a hand grip at a first end thereof and being connected at an opposite end thereof to a respective one of the first and second end members of the exercise device; (b) placing the exercise device on a floor such that the pair of protracting arcuate portions support the platform on the floor in a configuration in which the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end members, but is not prone to side-to-side rocking motion of the exercise device relative to the floor; (c) balancing one's self on the platform while the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end members, but is not prone to side-to-side rocking motion of the exercise device relative to the floor; (d) and while balancing one's self on the platform, exercising with the resistance bands; (e) turning the exercise device upside down on the floor such that the first and second end members support the exercise device on the floor in a stationary position wherein the exercise device is not prone to rocking motion; (f) balancing one's self on the platform while the exercise device is in the stationary position; and (g) while balancing one's self on the platform, exercising with the resistance bands. 11. A method of exercising, comprising: (a) providing an exercise device, comprising: (i) a pair of spaced apart arcuate portions, (ii) a first end portion interconnecting a first end of the pair of arcuate portions, (iii) a second end portion interconnecting a second end of the pair of arcuate portions, (iv) a platform configured to receive and support a person on the exercise device, the pair of arcuate portions protracting from the platform such that the arcuate portions are configured to support the platform on a floor in a configuration in which the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end portions, but is not prone to side-to-side rocking motion of the exercise device relative to the floor, and (v) a pair of resistance bands for exercising, each resistance band including an elongate body having a hand grip at a first end thereof and being connected at an opposite end thereof to the exercise device and extending from a respective one of the first and second end portions of the exercise device; (b) placing the exercise device on a floor such that the pair of protracting arcuate portions support the platform on the floor in a configuration in which the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end portions, but is not prone to side-to-side rocking motion of the exercise device relative to the floor; (c) balancing one's self on the platform while the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end portions, but is not prone to side-to-side rocking motion of the exercise device relative to the floor; (d) and while balancing one's self on the platform, exercising with the resistance bands; (e) wherein said step of balancing one's self includes stepping onto the platform. 12. The method of claim 10, wherein said step of balancing one's self includes stepping onto the platform. 13. A method of exercising, comprising: (a) providing an exercise device, comprising: (i) a pair of spaced apart arcuate portions, (ii) a first end portion interconnecting a first end of the pair of arcuate portions, (iii) a second end portion interconnecting a second end of the pair of arcuate portions, (iv) a platform configured to receive and support a person on the exercise device, the pair of arcuate portions protracting from the platform such that the arcuate portions are configured to support the platform on a floor in a configuration in which the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end portions, but is not prone to side-to-side rocking motion of the exercise device relative to the floor, and (v) a pair of resistance bands for exercising, each resistance band including an elongate body having a hand grip at a first end thereof and being connected at an opposite end thereof to the exercise device and extending from a respective one of the first and second end portions of the exercise device; (b) placing the exercise device on a floor such that the pair of protracting arcuate portions support the platform on the floor in a configuration in which the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end portions, but is not prone to side-to-side rocking motion of the exercise device relative to the floor; (c) balancing one's self on the platform while the exercise device is prone to end-to-end rocking motion of the exercise device relative to the floor between the first and second end portions, but is not prone to side-to-side rocking motion of the exercise device relative to the floor; (d) and while balancing one's self on the platform, exercising with the resistance bands; (e) wherein said step of balancing one's self includes sitting on the platform. 14. The method of claim 10, wherein said step of balancing one's self includes sitting on the platform.