Cardio fitness machine

A fitness machine comprising:

• a single elongate rail formed from a single elongate metal bar, the single elongated rail having a length extending between opposite front and back ends of the single elongated rail, the single elongated rail extending along and defining an x-axis of the fitness machine extending from the front end to the back end of the single elongated rail, the single elongated rail having an outer surface extending along the x-axis and surrounding the x-axis for a portion of the length of the single elongated rail;
• a pair of wheels attached to the single elongated rail adjacent a front portion of the single elongated rail and a pair of struts, each individual strut of the pair of struts being attached to the single elongated rail and extending from the single elongated rail to a respective individual wheel of the pair of wheels, the individual wheel rotatably attached to the individual strut, the pair of wheels rotatable about a common axis of rotation, the axis of rotation defining a z-axis of the fitness machine perpendicular to the x-axis, the single elongated rail being disposed between the pair of wheels with the single elongated rail spaced from the z-axis;
• a stand connected to the single elongated rail, the stand extending away from single elongated rail along and defining a y-axis of the fitness machine, the y-axis perpendicular to the x-axis and the z-axis;
• a pair of handlebars attached to a portion of the single elongated rail disposed at the back end of the single elongated rail, the pair of handlebars extending away from the single elongated rail from opposite sides of the single elongated rail;
• the pair of wheels and the stand being configured to cooperatively support the fitness machine on a horizontal surface whereby the single elongated rail is spaced from the horizontal surface and extends parallel with the horizontal surface and the pair of handlebars extend away from the horizontal surface as they extend away from the single elongated rail when the fitness machine is on the horizontal surface, the fitness machine being in a horizontal orientation when the fitness machine is supported by the pair of wheels and stands on the horizontal surface;
• the pair of wheels and the front end of the single elongated rail being configured to cooperatively support the fitness machine on the horizontal surface whereby the single elongated rail is against the horizontal surface and extends perpendicularly away from the horizontal surface when the fitness machine is on the horizontal surface, the fitness machine being in a vertical orientation when the fitness machine is supported by the pair of wheels and the front end of the single elongated rail is on the horizontal surface;
• and
• the fitness machine being pivotable between the horizontal orientation of the fitness machine and the vertical orientation of the fitness machine.