1. The combination of stationary-mounted, pedal-operated exercise apparatus with a computer operated video display apparatus which provides operator interaction with a computer during an exercise program, comprising; a pedal operated exercise apparatus mounted in a fixed position on a stationary surface for use in exercising by an operator by pedaling in a fixed position, an electric generator operated by said pedal operated apparatus, switch means connected to said generator and activated upon a predetermined output from said generator corresponding to a predetermined energy expenditure level by the operator of said exercise apparatus, a computer having a power source independent from said generator, a video display interfaced with said computer and having a power source independent from said generator, means on said exercise apparatus controlled and operated by the operator for interactively playing a game on said computer, and said switch means being operatively distinct from said operator-controlled means and connected in circuit between said computer and said operator-controlled means and permitting game playing on said computer only when said switch means is activated by said generator.