Abstract: An abdominal exercise device is disclosed that includes a frame and a knee support configured to support both of a user's knees when the user is in a kneeled position. In one embodiment, the knee support is pivotally mounted to the frame. In another embodiment, the knee support swings with respect to the frame. A hand grip is attached to the frame. A user will kneel on the pivotally mounted knee support and grip the hand grip with their hands. By holding the hand grip, the user holds their upper body in a relatively stationary position with respect to the frame. Then, by contracting their abdominal muscles, the user can pivot the knee support upon which their knees rest up toward the can support, thereby providing their abdominal muscles with a work out.