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An exercise board for accommodating the foot or feet of a balancing user during exercise movement has an elongated flat platform with opposite, typically upturned ends, similar to a skateboard. The board defines an upper facing side dimensioned to receive the foot or feet of the balancing user and a

An exercise board for accommodating the foot or feet of a balancing user during exercise movement has an elongated flat platform with opposite, typically upturned ends, similar to a skateboard. The board defines an upper facing side dimensioned to receive the foot or feet of the balancing user and a lower facing side. Resilient rocker-mounting ends are mounted to the lower facing side at either end of the elongated flat platform. Each resilient rocker-mounting end includes a rigid floor contacting rocker section and an elastic column. The floor contacting rocker section has a rounded floor-contacting surface. The elastic column is mounted to the elongated flat platform at the upper end, mounted to the floor contacting rocker at the lower end, and bendable both longitudinally and in torque responsive to shifting weight of a balancing user on the upper facing side of the elongate platform.

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1. An exercise board for accommodating the foot or feet of a balancing user during exercise movement upon a floor comprising in combination: an elongated flat platform having opposite ends and defining an upper facing side dimensioned to receive the foot or feet of the balancing user and a lower

1. An exercise board for accommodating the foot or feet of a balancing user during exercise movement upon a floor comprising in combination: an elongated flat platform having opposite ends and defining an upper facing side dimensioned to receive the foot or feet of the balancing user and a lower facing side; two resilient rocker-mounting ends mounted to the lower facing side at either end of the elongated platform, each resilient rocker-mounting end separated from the other resilient rocker-mounting end; each resilient rocker-mounting end including a floor contacting rocker section and an elastic column; each of said floor contacting rocker sections having an independent lower floor contacting surface for adjustably removable contact with the floor; each of said elastic columns mounted to said elongated flat platform at said upper end, and mounted to its lower floor contacting rocker at the lower end, and bendable responsive to shifting weight of a balancing user on the upper facing side of the elongated platform; whereby a balancing user undergoing exercise can alternately lift one of said resilient rocker-mounting ends at its floor contacting surface from the floor while the other of said resilient rocker-mounting ends remains in contact with the floor with its elastic column loaded by the user's weight from the elongated flat platform to the floor. 2. The exercise board for accommodating the foot or feet of a balancing user during exercise movement according to claim 1 comprising in combination: said elastic columns are bendable longitudinally and torsionally. 3. The exercise board for accommodating the foot or feet of a balancing user during exercise movement according to claim 1 comprising in combination: said elongated flat platform has opposite upturned ends. 4. The exercise board for accommodating the foot or feet of a balancing user during exercise movement according to claim 1 comprising in combination: said elastic column is an elastic rubber column. 5. A process of exercising on a board for accommodating the foot or feet of a balancing user during exercise movement comprising the steps of: providing an elongated flat platform having opposite ends and defining an upper facing side dimensioned to receive the foot or feet of the balancing user and a lower facing side; providing two resilient rocker-mounting ends mounted to the lower facing side at either end of the elongated platform, each resilient rocker-mounting end separated from the other resilient rocker-mounting end; each resilient rocker-mounting end including a floor contacting rocker section and an elastic column; each of said floor contacting rocker sections having an independent lower floor contacting surface for adjustably removable contact with the floor; each of said elastic columns mounted to said elongated flat platform at said upper end, and mounted to its lower floor contacting rocker at the lower end, and bendable responsive to shifting weight of a balancing user on the upper facing side of the elongated platform; shifting the balancing user's weight at the user's feet to alternately lift one of said resilient rocker-mounting ends at its floor contacting surface from the floor while the other of said resilient rocker-mounting ends remains in contact with the floor with its elastic column loaded by the user's weight from the elongated flat platform to the floor; and, moving the elongated flat platform with the user's feet against the elastic column loaded by the user's weight to for exercise.