When we think of core exercises, standard moves like situps and crunches are often a go-to. But working the side body is an important piece of a well-rounded core routine that is sometimes overlooked.

This exercise works the muscles in your side abs (external and internal obliques). PROGRESSION Do 2 to 3 sets of 8 to 15 reps. MOVEMENT *Lie on your left side with your feet stacked on top of each ...

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 ...