equilibrium

  Do you faithfully perform crunches, hoping to achieve a flat tummy? It may be time to mix it up a bit! Research shows that crunches are one of the worst abdominal moves in terms of how hard the obliques and rectus abdominus are worked.  The crunch only affects a small part of the core, repeatedly bends the spine, and burns few calories.  Try this no-crunch abs workout instead.