NOVELTY - The method involves defining an exercise schedule for a user i.e. client, and storing the schedule on a non-volatile computer-readable medium e.g. non-volatile memory card. One of two exercise machines is selected. An estimate of user's performance on the selected machine is obtained. A value representative of the estimate is written to the medium. The selecting, obtaining and writing steps are performing twice on different machines so as to cause the user to perform an exercise regimen. Values representative of the estimates of the user's performance for each machine are stored.    USE - Method for performing an exercise regimen on an exercise machine (claimed) in an exercise center e.g. health-club and fitness center. Uses include but are not limited to a treadmill, a recumbent bike, an upright bike, an upper-body crank, a recumbent stepper, an upright stepper, an elliptical exercise machine and a climber.    ADVANTAGE - The method allows a coach or a personal trainer to determine a personal exercise regimen for the user, enter the regimen into a computer program running on a personal computer, and subsequently have the regimen written to the non-volatile medium through a standard Universal serial bus port, so that the user can perform two different exercises on the same machine by operating the machine in different modes. The method allows the user to disengage the medium from the computer of one machine and to insert the medium to computer of other machine having different parameter settings in an exercise center, so that the machine having different parameter settings can automatically set its performance parameters to match parameter settings of the regimen stored on the medium, thus enabling the client to immediately start exercising even in the machine having different parameter settings.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an exercise machine comprising an exercise apparatus.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating steps in a computer program that assists in creation and storage of an exercise program.