This standing abs workout builds functional core strength in a way that crunches never could

Core strength is top on the list of things my personal training clients want to work on, but they don’t like the idea of doing crunches to achieve this.

The good news is that the core is responsible for so much more than bending your spine forward—the movement involved in crunches. For instance, your core muscles help you rotate—an essential daily movement.

“We live our life in rotational motions, so rotational exercises helps keep our bodies resilient and can prevent injuries,” says physical therapist and personal trainer Christynne Helfrich from Hinge Health.

I've selected some of my favorite rotational exercises before, but I recently came across this six-move standing abs workout from trainer Danica Osborn that also includes some more great weighted rotational moves.

How to do Osborn’s core workout

Osborn is using an 18lb (8kg) kettlebell, but select a weight that suits your ability. For beginners, I recommend starting with a 9lb weight. Either set a time for 30-45 seconds or do 10-12 reps. Aim for 2-3 rounds.

If you don’t own a kettlebell, you can use a dumbbell instead, although this adjustable kettlebell from Bowflex is currently reduced and a smart buy.

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This top-quality kettlebell has six weight settings ranging from 8lb to 40lb, chosen by turning the dial on the top when the kettlebell is in its cradle. The handle is smooth on your hands, and it’s wide enough for two-handed kettlebell swings and deadlifts. It’s a great, space-saving addition to any home gym, and cheaper than most adjustable dumbbells.

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Why it’s worth developing rotational strength

You won’t develop washboard abs from doing this workout, but it will help you achieve something far more important—a functionally strong body that can handle what life throws at it.

“A lot of my patients I see report pain from doing really simple tasks,” says Helfrich. “A lot of times, these issues could have been prevented with proper functional training.

“Core-specific rotational exercises target muscles like the obliques that wrap around your torso, and are essential for moving your upper body across your core,” says Helfrich.

“This helps with activities like emptying the dishwasher or transferring laundry from the washer to the dryer.”