The Ab Wheel excels for building prominent Abs, core strengthening and stability (Abdominal muscles). It has been around as far back as the 60s as a testament of its viability and utility with.
Its structure, although simple, allows several levels of progression to intensify the impact on the abs; from
Using the Ab wheel would heavily build Core stability, which is one of the main factors to consider when targeting the right form and postures to prevent injury during other exercises like heavy weight lifting and squats. The strengthening of the Core includes the muscles surrounding your Lower back, which means that your back is protected during strenuous movements or stretches that would otherwise bring tension, cramps or pain.