Disclosed is a treadmill for enabling a user to tread and twist. The treadmill includes a base, a post extended from the base, a pivotal unit including two inclined axles extended from the post, two treadles each connected to a related one of the inclined axles, two hydraulic cylinders each comprising an end connected to a related one of the treadles and another end connected to the base and a linking unit. The linking unit includes two cranks each connected to a related one of the inclined axles, a U-shaped element connected to the post, a pulley supported on the U-shaped element and a rope wound around the pulley and formed with two end each connected to a related one of the cranks.
