5 Best Dumbbell Ab Exercises for a Stronger Core

Tyler Sellers
Published by Tyler Sellers | Senior Coach
Last updated: January 14, 2024
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As a fitness trainer, I've seen too many people focus on aesthetics over strength. And in this case, I'm talking about abs.

While having a six-pack looks great and reflects hard work, it's not always indicative of strength.

So, what exercises build strong abs?

After doing a bit of research, I found five dumbbell exercises that will build ab strength, support core stability, and enhance your athletic movements.

Let's dive in.

Quick Summary

  • Ab training with dumbbells consists of exercises that equally target all parts of the abdominal muscles in a more challenging way.
  • Weighted ab training like dumbbell leg raises or dumbbell Russian twists helps you increase ab muscle strength and size, which affects the overall appearance.
  • According to Harvard Health Publishing, the abs play a significant role in maintaining proper posture and stability while standing or sitting
  • Strong abdominal muscles are crucial for core functionality, decreasing the risk of injuries.

Five Best Dumbbell Exercises for Abs

man doing a dumbbell ab workout

In my own fitness journey, I've learned that strong abdominal muscles are crucial not only for aesthetics but also for a functional core and overall health.

Adding weight to ab workouts, particularly with dumbbells, has been a game-changer for me. Their versatility allows them to target abdominal muscles from various angles.

Here are the five most effective dumbbell exercises for abs, ranked from easiest to most challenging.

1. Dumbbell Side Bend

I've found the dumbbell side bend to be incredibly effective for targeting the obliques. This exercise has helped me develop a stronger, more defined waistline.

Here's how you do it with good form:

  • Stand up straight with your feet hip-distance, holding a dumbbell in one hand.
  • From the standing position, bend your upper body sideways towards the opposite side of the dumbbell, holding your arms straight.
  • Slowly return to the starting position.
  • Repeat for reps and switch sides.

2. Kneeling Woodchoppers

Performing kneeling woodchoppers

This exercise, with its unique rotational movement, has not only enhanced my core strength but also improved my functional fitness, making it a valuable addition to my abdominal workouts.

Here's how you do it:

  • Kneel on one knee and hold a dumbbell with both hands above your head.
  • Chop the weight down diagonally across your body towards the opposite hip while twisting your torso.
  • Return to the starting position.
  • Repeat for reps and switch sides.

3. Dumbbell Russian Twist

The dumbbell Russian twist is not just about sculpting the abs; it also enhances rotational strength, which I've found beneficial in my daily activities.

Here's how you perform this exercise with good form:

  • Sit on the ground with your knees bent and your feet shoulder-width apart, flat on the floor.
  • Hold a dumbbell with both hands in front of your chest.
  • Twist your torso to one side and touch the dumbbell to the ground.
  • Twist to the other side and touch the dumbbell to the ground. That’s one rep.
  • Repeat for the desired number of reps.

4. Dumbbell Leg Raises

Inclined leg raises

This movement has been key in helping many of my clients achieve a well-rounded core strength.

Here's how you do it:

  • Lie on your back with your legs extended and hold a dumbbell between your feet.
  • Engage your core muscles and use your lower abs to lift the dumbbell off the ground and toward the ceiling.
  • Hold the weight at the top of the movement for a second, then slowly lower it a few inches off the floor.
  • Repeat for reps.

5. Incline Dumbbell Reverse Crunch on a Bench

The incline dumbbell reverse crunch on a bench has been a key exercise in targeting my lower abs.

Performing this on an incline bench adds a challenging dimension that I've found particularly effective for deep core engagement and strengthening, making it a crucial part of my ab-focused workouts.

Here's how you do this exercise with good form:

  • Lie on an incline bench (45–60 degrees) and hold a dumbbell between your feet.
  • Use your abs to lift your hips off the adjustable bench so your knees move towards your chest.
  • Slowly lower your knees and hips back down to the starting position.
  • Repeat for reps.

Related: Best Weighted Ab Exercise

Choose a dumbbell suitable for your fitness level and ability, and keep your core muscles engaged so you can maintain proper form and avoid injury.

What Are the Benefits of Strong Abdominal Muscles?

Showing ab muscles

The benefits of strong abdominal muscles go beyond enhancing your appearance, as they also play a critical role in supporting your spine, promoting proper posture, and stabilizing your body.

The abdominal muscles are also actively involved in all types of movements, such as reaching overhead, lifting heavy objects, and twisting to the side.

According to Harvard Health Publishing, they even play a significant role in maintaining proper posture and stability while standing or sitting [1].

“Developing strong abs can improve your overall fitness level and physical performance, as well as boost your confidence and self-esteem.”

- Dr. Len Kravitz, Professor of Exercise Science

Related Articles:

Abs Anatomy

The abdominal muscle wall comprises five muscles, from deep-lying to superficial ones [2].

The deep-lying muscles, the pyramidalis and transverse abdominis, play a role in holding organs in place, preventing hernias, and increasing intra-abdominal pressure.

On the other hand, the superficial muscles, which contract eccentrically and concentrically during the exercises mentioned above, give the midsection a more aesthetic look.

Superficial Muscles

Ab muscles up close

These muscles comprise the rectus abdominis and the internal and external obliques.

The internal obliques are situated beneath the external obliques, with fibers running diagonally up the abdomen from the lower ribs to the pelvis.

The external obliques are a pair of broad, flat muscles that run diagonally along the sides of the abdomen, framing the abs, and are responsible for flexing and rotating the trunk.

And finally, the rectus abdominis.

Sitting as the most superficial anterior abdominal muscle, this long and flat muscle is recognized as the primary ab.

Known as the “six-pack,” it flexes the trunk and stabilizes the pelvis during upper and lower body movements.

The additional weight in your dumbbell exercises forces these abdominals to adapt to the load and become more prominent and stronger [3].

Creating a Program

Woman top view performing ab workout

Even though specific ab exercises can be performed daily, what I've learned over the years is that the best option is to have at least one day of rest between sessions.

However, if you choose to dedicate one day to abs exclusively, here’s an example of a workout plan my clients have had good results with:

  • Always start with a five-minute warm-up to get your heart rate up and warm up your muscles. You can also begin by assuming a basic plank position and performing several sit-ups to prepare the muscles.
  • Begin your ab exercises with incline dumbbell reverse crunches on a bench. This exercise targets the lower abs, which can be challenging to perform. Do 3 sets of 12 reps.
  • Next, perform dumbbell leg raises to continue targeting the lower abs and eventually build a flatter, more defined midsection. Do 3 sets of 15 reps.

After targeting the rectus abdominis muscles, focus on the obliques:

  • Russian twists are challenging but the most effective core exercise for strengthening the obliques. The use of dumbbells adds resistance and forces the muscles to work harder. Do 3 sets of 15 reps (start with the left side).
  • Now, do kneeling woodchoppers. Except for obliques, they also hit other upper body muscles. Do 3 sets of 10 reps per side (starting with a right arm).
  • The last exercise is a dumbbell side bend. It’s a final touch for hitting the obliques and creating a more defined waistline. Do 3 sets of 12 reps for each side (start with the left arm).

Combining Dumbbell Exercises with Bodyweight Movements

Over the years, I’ve found that blending dumbbell exercises with bodyweight movements creates a dynamic, full-spectrum core routine to elevate your ab workouts. This approach not only intensifies the workout but also ensures comprehensive muscle engagement.

For instance, after a set of weighted Russian twists, you can transition into a plank hold. This shift challenges the core differently: the weighted twists target oblique strength and rotational stability, while the plank fortifies the deep core muscles.

My experience has shown that such combinations aren’t just about building strength; they’re about crafting a resilient, versatile core that's as functional as it is aesthetic.

Focus on Injury Prevention and Safe Practices

Injury prevention is paramount in any workout, especially with dumbbell ab exercises where the risk of lower back strain is heightened.

Emphasizing safe practices, like maintaining a neutral spine and avoiding overextension, is crucial.

In my training, I've learned the importance of starting with lighter weights to master form before progressing. This approach ensures that the core, not the back, is doing the work.

Additionally, engaging the core throughout each exercise, as if bracing for impact, has been a game-changer in protecting my back. Remember, a strong core is a protected spine.


Do Dumbbells Burn Belly Fat?

Yes, using dumbbells burns fat, including belly fat. The dumbbell exercises are very beneficial for this purpose as they can burn many calories. However, dumbbell exercises should be incorporated into a comprehensive workout program that includes cardio and a healthy diet to fast-track and increase overall fat loss.

How to Get a Six-Pack With One Dumbbell?

To get a six-pack with one dumbbell, you must be creative and think of the most effective abdominal workouts with minimal equipment. The exercises for abs usually performed with one dumbbell are Russian twists, woodchoppers, side bends, or V-Sits.


  1. https://www.health.harvard.edu/healthbeat/the-real-world-benefits-of-strengthening-your-core
  2. https://my.clevelandclinic.org/health/body/21755-abdominal-muscles
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