An exercise system comprises a stationary exercise apparatus including support arms, exercise parts, and a frame, at least one electromyograph configured to be worn on at least one body portion of a user, the electromyograph including an electromyogram sensor and a motion sensor, and a smart device configured to obtain a posture according to the detected motion, elect at least one exercise part corresponding to the posture from among the exercise parts, determine a target exercise part among the at least one exercise part elected, obtain a muscle strength by analyzing the detected electromyogram, record a muscle strength enhancement history in association with a use history of the determined target exercise part, and output the recorded muscle strength enhancement history and the use history.