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An exercise machine has a base with an upright member secured thereto. A pair of lever arms are rotatably positioned on the upright member and rotate from a first position to a second position. A gas cylinder assembly is mechanically associated with the upright member and connected to the lever arms

An exercise machine has a base with an upright member secured thereto. A pair of lever arms are rotatably positioned on the upright member and rotate from a first position to a second position. A gas cylinder assembly is mechanically associated with the upright member and connected to the lever arms by a chain means. The gas cylinder assembly provides resistance to movement of the lever arms from the first toward the second position. A purchase assembly is mechanically associated with the frame and connected to the lever arms by a cable means. The purchase assembly includes a block and tackle to provide a mechanical advantage for moving the lever arms from the first position toward the second position. A line from the block and tackle is connected to one of several possible moveable elements such that operation of the moveable element results in movement of the lever arms.

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An exercise machine has a base with an upright member secured thereto. A pair of lever arms are rotatably positioned on the upright member and rotate from a first position to a second position. A gas cylinder assembly is mechanically associated with the upright member and connected to the lever arms

An exercise machine has a base with an upright member secured thereto. A pair of lever arms are rotatably positioned on the upright member and rotate from a first position to a second position. A gas cylinder assembly is mechanically associated with the upright member and connected to the lever arms by a chain means. The gas cylinder assembly provides resistance to movement of the lever arms from the first toward the second position. A purchase assembly is mechanically associated with the frame and connected to the lever arms by a cable means. The purchase assembly includes a block and tackle to provide a mechanical advantage for moving the lever arms from the first position toward the second position. A line from the block and tackle is connected to one of several possible moveable elements such that operation of the moveable element results in movement of the lever arms. e and such that an opposite end of said recovery spring exerts a force against a top end of said guide tube, said braking mechanism having a brake shoe fastened to a bottom end of said link rod and extended through said through hole, said brake shoe being movable downwardly when an external pressure is directed downwardly onto said trigger plate. 2. The vehicle of claim 1, said guiding projection of said front runner and said guiding projection of said rear runner each having a pair of guiding edges spaced from each other and a guiding recess located between said pair of guiding edges. 3. The vehicle of claim 1, said link rod of said braking mechanism having a pair of arms extending therefrom, said brake shoe comprising, a first brake shoe affixed at a bottom of one of said pair of arms and a second brake shoe affixed at a bottom of another of said pair of arms, said through holes comprising a first through hole formed in one of said planar surfaces and a second through hole formed in another of said planar surfaces, said pair of arms respectively extending through said first and second through holes.