Gone are the days when we thought we could simply crunch our way to that coveted six-pack. We know better—sculpting a whittled middle means calling into play all of your core muscles, from the rectus abdominus (AKA the six-pack) to the transverse abdominus to the internal and external obliques. This month, were asking you to skip the sit-ups. Instead, let PROJECT by Equinox trainer Lauren Williams take you through a core-blasting series that not only nails each of your abdominal muscle groups,

Gone are the days when we thought we could simply crunch our way to that coveted six-pack. We know better—sculpting a whittled middle means calling into play all of your core muscles, from the rectus abdominus (AKA the six-pack) to the transverse abdominus to the internal and external obliques. This month, were asking you to skip the sit-ups. Instead, let PROJECT by Equinox trainer Lauren Williams take you through a core-blasting series that not only nails each of your abdominal muscle groups,

Original article and pictures take https://fitnessmagazine.com site