FITBODY Exercise Library · Core
Russian Twist
The Russian twist, also called the oblique twist, is a rotational core exercise that fires the obliques through controlled side to side movement. It is one of my favorite ways for women over 40 to build a strong, stable core and a toned waistline.
What Is a Russian Twist?
The Russian twist is a rotational ab exercise that works more of your core than moves like sit ups or crunches. You still get upper and lower ab involvement, but the twisting motion brings in the obliques, which are hard to reach without rotation. The secret is controlled rotation from side to side, which pulls in the muscle fibers that surround your core and lower back. Women who want to focus on a strong, defined waistline love adding Russian twists to their ab routine.
How to Do the Russian Twist
Move your whole upper body as one unit and do not chase the floor. With the women I coach, the common mistake is leaning forward to tap the ball down on each side, which can strain the lower back. Keep your chest tall and let the rotation come from your obliques, not from folding forward.
What Muscles Do Russian Twists Work?
Russian twists mainly target the obliques, the muscles on the sides of your abdomen that rotate and side bend your spine, but the movement asks a lot of the whole core. For a closer look at the muscles of the abdominal wall, see this core anatomy overview. Building a strong core supports the heavier work in a broader strength training plan for women over 40.
See the full muscle breakdown
- Obliques: the muscles on the sides of your abdomen that rotate and side bend the torso, the main target of the twist.
- Rectus abdominis: the front ab muscles, which stabilize the spine through the rotation.
- Transverse abdominis: the deep core muscle that braces and supports the spine.
- Erector spinae and quadratus lumborum: run along the spine and lower back to stabilize and control the movement.
- Hip flexors and glutes: help stabilize the pelvis and keep you balanced, especially with your feet lifted.
Sets and Reps
Russian twists respond well to controlled reps, counted per side or as total twists. Start with bodyweight and add a med ball or kettlebell as you get stronger.
| Goal | Sets | Reps |
|---|---|---|
| Core endurance | 2 to 3 | 20 to 30 total twists |
| Strength and control | 3 | 12 to 16 per side |
| Beginner, feet down | 2 | 10 to 12 per side |
Rest 30 to 60 seconds between sets. Count a twist to each side as one rep, or count total touches. Add weight only once you can keep a tall chest and a controlled rotation.
Variations and Progressions
Bodyweight Russian Twist
Start with no weight and your hands clasped together. This is plenty of challenge while you learn the rotation and build control.
Med Ball Russian Twist
Hold a medicine ball at chest level with your elbows tucked in. A med ball is easy to progress, since it comes in different weights that you can increase as your core gets stronger.
Kettlebell or Dumbbell Russian Twist
Adding a kettlebell or dumbbell increases the resistance and the grip and stabilization demand, which brings in the forearms and shoulders. The uneven weight also challenges your balance and coordination, and it makes progressive overload simple as you get stronger.
Feet Elevated Russian Twist
Lift your feet off the floor with your knees bent or straight to bring in the hip flexors and challenge your balance further. Progress to this once the feet down version feels controlled.
The Russian twist pairs well with the rest of my abs workout for women and the other core work in my exercise library.
Common Mistakes to Avoid
- Leaning forward to touch the floor. Chasing a floor tap on each side can strain the lower back. Keep your chest tall and rotate through the obliques.
- Rounding the back. Keep your spine long rather than slumping, which protects your lower back.
- Using momentum. Move in a controlled way so the obliques do the work, not a swing.
- Letting the weight drift low. Keep the ball or weight at chest level with your elbows tucked so the upper body stays as one unit.
- Rushing before you are ready. Build control first, then add speed or weight.
Do Russian Twists Make Your Waist Smaller or Wider?
Russian twists strengthen and tone the obliques, but they are not a way to spot reduce fat or change the width of your waist on their own. Spot reduction, the idea that you can burn fat from one area by training it, is a common fitness myth. Building the oblique muscles can improve definition, but a leaner waistline comes from a comprehensive approach, balanced nutrition, cardiovascular exercise for overall fat loss, and a variety of core work. Genetics also shape your natural waist, and there is a limit to how much exercise changes its width. With moderate weight and good form, Russian twists will not make your waist wider.
Russian Twist FAQs
What muscles do Russian twists work?
Russian twists primarily target the obliques, the muscles on the sides of your abdomen that rotate and side bend your torso. They also engage the rectus abdominis, the deep transverse abdominis, and the erector spinae along your spine, all of which stabilize you through the twist. Your hip flexors and glutes help keep you balanced, especially when your feet are lifted. So while the obliques are the star, the movement asks a lot of the whole core. That is what makes it a nice addition to a rounded core routine.
Are Russian twists bad for your back?
Russian twists are safe for most people when done with good form, but poor technique can bother the lower back. The main thing to avoid is leaning forward to tap the weight on the floor with each rotation, which can strain the spine. Instead, sit tall, keep your abs drawn in, and move your upper body as one unit so the rotation comes from your obliques. Start with bodyweight and add resistance only once your form is solid. If you have an existing back issue, check with your physical therapist or doctor before adding load.
Do Russian twists give you a smaller waist?
Russian twists strengthen and tone the obliques, but they do not directly shrink your waist, because you cannot spot reduce fat from one area. A leaner waistline comes from overall fat loss through balanced nutrition and consistent training, not from any single exercise. What Russian twists do well is build strength and definition in the muscles that support your spine and posture. Genetics also play a role in your natural waist shape. Used with moderate weight and good form, they will not make your waist wider.
How many Russian twists should I do?
A good starting point is two to three sets of about ten to sixteen twists per side, or twenty to thirty total twists. Because it is a core exercise, the quality of the rotation matters more than a high number of fast reps. Start with your bodyweight and feet down, then progress by adding a med ball or kettlebell, lifting your feet, or adding reps. Keep your chest tall and your movement controlled the whole time. Build up gradually as your core gets stronger.
Should my feet be up or down during Russian twists?
Both are good options, and the right one depends on your strength and balance. Keeping your heels on the floor is the easier version and a great place to start, since it lets you focus on the rotation. Lifting your feet off the floor, with knees bent or straight, brings in the hip flexors and makes the exercise much harder to balance. Start with your feet down and progress to lifting them once you can keep a tall chest and a controlled twist. There is no need to rush to the harder version.
References
- Escamilla, Rafael F., et al. “Core Muscle Activation During Swiss Ball and Traditional Abdominal Exercises.” Journal of Orthopaedic and Sports Physical Therapy, vol. 40, no. 5, 2010, pp. 265-276, doi.org/10.2519/jospt.2010.3073.
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I’m Julie Lohre, an IFBB Fitness Pro and certified personal trainer and nutrition specialist. For more than 20 years I have helped women over 40 get stronger, leaner, and more confident through personalized online coaching built around their real lives.