A fitness apparatus includes a first frame, a second frame, a nose part, a linear elastic element, and a cable. The second frame is pivotally connected to the first frame. The nose part and the second frame are coaxially pivotally connected to the first frame. The linear elastic element has a first end and a second end. The first end is connected to the first frame. The cable has a connecting end and a force-applying end. The connecting end is connected to the second end. The cable is pressed against the nose part, and the force-applying end of the cable drives the second frame. When the second frame pivotally swings against the first frame, the second frame pulls the cable and changes the length of the cable pressed against the nose part, whereby the linear elastic element may be stretched or shortened by the cable.