You probably have a bunch of body-weight ab exercises that you love doing, but to really make a dent in your core strength, try adding abdominal kettlebell exercises to your workout. Not only are these weighted tools great for toning your abs, but they also offer a superior cardiovascular workout.

The best abdominal kettlebell exercises include the single arm side load march, a dead bug exercise, and a plank pull through, which works the core in a dynamic way. All three are great for developing a stronger trunk and a slimmer waistline.

Single-arm side load marches are a great anti-lateral flexion exercise, and they will help develop hip stability as you alternate legs to walk in place for a set number of reps. They are simple enough to progress to as you get stronger, and can be done with a variety of different kettlebells.

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Keeping your back straight, hold the kettlebell in your right hand over your head and slightly away from your body. Using your abs and core, drive your knee toward your chest, pause, then return to the beginning position. Repeat with your left knee.

Dead bugs alone are a great exercise for toning your abs, but with the addition of the kettlebell, they become even more challenging. “The kettlebell swing is a full-body move that requires a strong, stable core,” says Duncan.

Kettlebell dead bugs will strengthen your core and improve your ability to brace your spine during other movements, like running or lifting heavy weights. They will also train your upper and lower back, hamstrings, and gluteal muscles.