Exercise system and method

A computer for use with an at-home exercise device by a first user participating in an exercise class accessible over a computer network, the computer configured to:

• cause a display screen to present a plurality of available archived instructor-led exercise classes for selection, each of the plurality of available archived instructor-led exercise classes comprising predetermined content for an entire exercise class;
• accept, via a user input interface, a selection of one of the available archived instructor-led exercise classes, resulting in a selected exercise class;
• receive, via the computer network, data representing content of the selected exercise class, the content of the selected exercise class comprising video content and audio content and at least one synchronizing signal, the at least one synchronizing signal comprising a starting point and an ending point for collecting performance parameters of the first user and a plurality of other users during the selected exercise class;
• cause the display screen to display the video content of the selected exercise class while the first user participates in the selected exercise class;
• receive, via a sensor input interface, first user performance data during at least a portion of the selected exercise class;
• generate, on a basis of the first user performance data, a first user performance parameter;
• receive, via the computer network, performance data representing user performance parameters for the plurality of other users over at least the portion of the selected exercise class, wherein the performance data was generated by the other users in one or more locations on at least one other exercise device while participating in the selected exercise class;
• and
• cause the display screen to display, during the selected exercise class, a dynamically updating ranked list of numbers including numbers corresponding to the first user performance parameters and numbers corresponding to at least some of the performance parameters for the plurality of other users, such that the numbers corresponding to the performance parameters displayed on the dynamically updated ranked list are synchronized to one another according to the at least one synchronizing signal to thereby simulate the first user competing with at least some of the other users during the selected exercise class, wherein the dynamically updating ranked list updates during the selected exercise class to reflect changes in the performance parameters and the updating continues from the start point to the end point.