Abstract: A multi-functional exercise apparatus for exercising arms, shoulders and trunk of a user. This exercise apparatus may include a stationary bicycle support platform and includes an upper body assembly which is movably engaged to and extended about the bicycle's seat mount. An arm-shoulder device is movably engaged to the upper body assembly. By providing such exercise apparatus, a user can move the upper body assembly with respect to the bicycle's seat mount to exercise the user's trunk while moving the arm-shoulder device to exercise the arms and shoulders. The user can independently or simultaneously rotate the bicycle's foot pedals with the user's legs to exercise the same for a more complete workout.