A small, light personal fitness device offers capability to perform both light and heavy exercises. The invention employs flywheels (61) to provide continual and variable resistance. The invention includes a method to adjust range of motion and a method to view the operating force of the system. Flywheel unit (3) and the hand unit (9) are attached via a cord (21). Handle (1) is held by hand or by foot. Knob (7) is used to wind the cord manually. Knob (13) is used to adjust the length of the cord. The invention also includes a resistance indicator (31) to show the resistance for each exercise, and to allow the user to monitor the exercising progress and increase in strength.