AbMatQuite simply, the AbMat provides the only way to do an anatomically correct sit up that safely and effectively gets you the results you want. By supporting your lumbar spine and eliminating space between your back and the floor, the AbMat increases stability while isolating your abdominals for a total core workout. With the AbMat positioned beneath your spine at the start of a sit up, you get a full stretch of your abdominal muscles, which is