IF YOU ARE focused on building a strong, functional core, you need to know what muscles you're working so hard to sculpt. There are the six-pack muscles (the rectus abdominis) trained with spinal ...

For on-demand core workouts — plus fitness challenges, meal plans and inspiration — download the Start TODAY app! When we think of core exercises, standard moves like situps and crunches are often a ...

To get chiseled abs, you have to target your abdominal muscles at the front and fire up your obliques on the sides of your core. Oblique crunches are a simple yet effective exercise to add to your ...