An exercise apparatus with both a mat rotating means operated by an electric motor and a foot support means to allow a user reclining on a mat to hang his/her body upside down from the foot support means or to do exercises, such as sit-ups, without help from another person. In the exercise apparatus of the present invention, the leg assembly includes movable and immovable legs, in which the movable leg is closed towards the immovable leg to close the leg assembly in an effort to increase space efficiency of the apparatus. The exercise apparatus also has a locking means for causing the leg assembly in a closed state to be maintained in a stable position, and a plurality of rollers mounted to an outside portion of either leg of the leg assembly to cause a user to easily move the heavy exercise apparatus when necessary.