An exercise apparatus which may be moveable between a storage mode and an exercise mode. The exercise apparatus may used on a base surface by a user. The exercise apparatus may include a frame for supporting a seat above the base surface. The frame may include a front leg. The frame may include an engaging member that may be pivotally connected to the front leg comprising an engaging portion. The frame may include a rear leg comprising a receiving portion disposed to receive the engaging portion. The exercise apparatus may include a moveable backrest. The moveable backrest may include a resilient spine member. The moveable backrest may include a first end connected to the frame. The moveable backrest may include a second end that is freely moveable. The backrest may be disposed to provide support to the user's back during movement of the backrest.