Abstract: An adjustable desk that operably engages a cardiovascular machines and methods of using the adjustable desk. The adjustable desk comprises a frame, a bottom platform, and a top platform. The bottom platform operably engages with the frame and defines a first substantially planar wall. The top platform operably engages with the frame and defines a second substantially planer wall. The top platform is provided at a first height above the bottom platform measured between the first substantially planar wall and the second substantially planar wall. The frame is adapted to engage with a support structure such as a cardiovascular machine. The frame is also configured to selectively adjustable one or both of the top platform and the bottom platform relative to the frame.