Provided is a movement wherein, when an excessive torque is generated, transmission of the torque to a speed regulator is suppressed, and when excessive torque is not generated, the wasteful consumption of energy is prevented. A movement (100) is provided with the following: a mainspring (1) (one example of a motive power source) for generating torque; a balance wheel (23) (one example of a speed regulator); a gear train mechanism (10) for transmitting the torque generated by the mainspring (1) to the balance wheel (23); and a spring-equipped base (30) (one example of a mechanism for movement) that, when the torque generated by the mainspring (1) is greater than a torque (Tmax) set beforehand, causes a wheel, such as a second wheel (12), of the gear train mechanism (10) to move in a direction in which torque transmission efficiency between gears of the gear train mechanism (10) decreases.