This article discusses current abdominal training by analysing the sit-up and leg-raise actions, and body segment alignment is emphasized with reference to the lumbar spine. A new approach to abdominal training based on the principles of spinal stabilization is proposed, consisting of three overlapping stages. In stage one, the stabilizing function of the deep abdominal muscles is re-educated, and several practical suggestions are made to assist this process. In stage two, static stability is built emphasizing isometric control of the lumbar spine neutral position. In stage three, apparatus is introduced for traditional exercises that are appropriate to functional training of the trunk.