The best exercise for inner thigh strength: 7 moves that hold up

Most people start searching for an exercise for inner thigh work because they want leaner-looking legs. Fair enough. But strong inner thighs do more than change how a pair of shorts fits. Your adductors, the muscles that run along the inside of the thigh, help control hip rotation and support the everyday work of squatting, lunging, and climbing stairs. They also help keep the knee and pelvis stable while you move.

Weak adductors tend to announce themselves. Wobbling knees. Sketchy single-leg balance. A groin that gets cranky on longer efforts. A lower body that never quite feels solid. That is why random burn-out pulses usually disappoint. You need movements that train strength, control, and position, not just a fleeting burn.

Here are seven that hold up. Some are simple. Some are humbling. All of them work if you actually repeat them. Consistency is what gets results, not chasing soreness for a week and then disappearing. Pick a few, track them, and stay with them long enough to get better.

1. Cossack squat

The Cossack squat is what happens when mobility and strength stop pretending to be separate skills. You shift hard into one hip, sit deep on that side, and keep the other leg long. Both adductors work at once. One side shortens and stabilizes while the other lengthens under tension.

If normal squats feel fine but anything sideways feels awkward, this is usually the reason. Plenty of people only train forward and back, then wonder why side steps, court sports, and uneven ground feel rough.

How to coach it

Start wider than shoulder-width with your chest up. Sit into one hip while the other leg stays straight and its foot stays planted if your mobility allows. Push back to the middle and switch sides.

• Slow the descent. Do not dive into the bottom. Own the position on the way down.
• Keep the working foot rooted. If the heel pops up, you have gone past your current mobility.
• Use support early. Hold a rack, a door frame, or a suspension trainer until the pattern feels stable.

This is an advanced move, but beginners can still use it by shortening the range. That is often the smartest way to start. Treat it as practice, not a test. It also exposes left-to-right differences fast, so if one side is clearly weaker or stiffer, set a simple plan and stick to it. Pairing it with a concrete target helps, which is the whole idea behind how to set fitness goals.

2. Sumo squat

If you want one dependable exercise for inner thigh strength, start here. The sumo squat is simple, scalable, and hard to mess up once your stance is right. It trains the adductors without turning the session into a balancing act.

The setup does most of the work. A stance wider than shoulder-width, with the toes turned out around 45 degrees, puts the adductors in a strong position to do their job. A narrow stance will not give you the same result.

Make the setup do the work

Take a wide stance, turn the toes out, and sit down between your hips instead of pitching forward. Drive through the floor to stand. Then progress it like any other lower-body lift. Bodyweight is fine at first, but bodyweight forever usually turns into maintenance. Once your form is solid, add a dumbbell, kettlebell, or barbell and build up gradually.

• Beginner: bodyweight or a light goblet hold.
• Intermediate: tempo reps with a pause at the bottom.
• Advanced: heavier loading with full control.

A common complaint is doing sumo squats for weeks and only feeling the quads. That is almost always a stance issue, not a motivation one. Widen the feet, turn the toes out a little more, and control the bottom. Then judge progress by what actually changed rather than by guessing, the same way we talk about in how to measure fitness progress.

3. Lateral lunge

The lateral lunge is more forgiving than the Cossack squat and more athletic than a machine. It teaches you to absorb force, shift your hips, and own side-to-side motion. That matters because real life is not a straight line, and neither is sport.

Step wide, sit back into the stepping leg, and keep the other leg long. Push back to center. Done right, you will feel the adductors of the straight leg stretch and work while the bent leg handles the power.

Why it earns a spot

This move builds strength in the frontal plane, which is a technical way of saying it trains the side-to-side control your body needs when you cut, reach, stumble, or change direction. Strong adductors support balance and steadier movement overall, which is a big part of why they matter beyond looks.

Beginners can use bodyweight and hold something stable if needed. Intermediate lifters can hold a dumbbell at the chest. For advanced work, load one dumbbell on the opposite side of the lunging leg, which lights up the hips and core. If you cross-train with cycling, running, rowing, or team sports, this is one of the best gaps to fill, since those repetitive sports rarely build lateral strength on their own. Our guide to best cross training is a good place to see where it fits.

4. Copenhagen adduction plank

This one is brutal. That is not marketing, just the truth. The Copenhagen adduction plank challenges the inner thigh directly while forcing the core, shoulder, and pelvis to stay organized. You set up in a side plank with the top leg supported on a bench or chair, lift your hips, and hold. If you are strong enough, you can lift the bottom leg too.

Start lower than your ego wants

Setting the bench too high usually produces violent shaking that people mislabel as advanced training. Skip that. Start with the knee on a lower surface instead of the foot on a high bench, and own the position first.

• Easier: bent-knee Copenhagen hold.
• Harder: straight-leg hold with the top foot supported.
• Hardest: add controlled bottom-leg lifts.

The point is not surviving a long hold. It is keeping a straight line from shoulder to hip to ankle while the adductors do serious work. If your hips sag, the set is over. This move is hard to fake, which is exactly what makes it useful. Machines and two-legged squats can hide side-to-side weakness. This will not. If your left side quits fast and your right feels solid, that tells you something worth acting on.

5. Seated adduction machine

The seated adduction machine gets dismissed by people who confuse “not fancy” with “not useful.” That is a mistake. If you want direct adductor work with measurable resistance and almost no balance demand, this machine does the job.

Sit down, set the pads so the position feels natural, and brace your torso against the backrest. Squeeze the legs inward under control, then return slowly. That is the whole movement.

Why isolation still matters

Compound lifts are great and worth keeping. Isolation work just gives you more local stimulus without piling fatigue onto your back, grip, and general recovery, and it is easy to progress because the setup is stable. It helps most for people who cannot feel their inner thighs during squats and lunges, because the machine teaches the sensation clearly. You can then carry that awareness back into the bigger lifts.

• Do not slam the pads together. Control the finish.
• Do not bounce out of the stretch. Lower with intention.
• Do not turn it into a back exercise. Stay tall against the pad.

On a busy gym day, this is also a practical fallback when there is no floor space for lunges or lateral work. Get in, do your sets, move on. Smooth reps, a brief pause at the squeezed position, and steady load increases beat wild weight jumps every time.

6. Glute bridge with a squeeze

This is the move to hand almost anyone. Beginners, deconditioned adults, people coming back from a layoff, anyone who wants adductor work without a lot of joint drama. Lie on your back, bend the knees, and put a yoga block, small ball, or rolled towel between them. Squeeze the object lightly as you lift the hips, then lower under control.

A smarter option when knees are cranky

A lot of inner-thigh advice jumps straight to loaded squats and deadlifts, which is not helpful for everyone. A bridge with a squeeze activates the adductors while keeping stress off the knee, so it is a strong option when you need something simpler and more joint-friendly. Floor-based adductor work is not a lesser version. For some people it is the right call.

It also works well as a warm-up primer before squats or deadlifts. A few controlled sets help you feel the inner thighs and glutes working together before you stand up and load heavier movement. If you sit a lot, this one tends to feel surprisingly good. Keep the rib cage down, avoid overarching the low back, and squeeze the object firmly enough to feel tension without trying to crush it.

7. Cable hip adduction

Cable hip adduction is clean, direct, and underrated. You clip an ankle cuff to a low cable, stand side-on to the stack, and pull one leg across your body against resistance. The cable keeps tension on the muscle the whole way, which is the appeal.

It will not replace your squats or lunges, and it does not need to. It fills a different role, giving you isolation in a standing pattern when you want more adductor work without lying on the floor or waiting for a machine.

How to make it worth doing

Stand tall and hold the machine lightly for balance. Keep the working leg mostly straight and move from the hip rather than swinging your torso around. Pause briefly as the leg crosses the midline, then return slowly. The biggest mistake is momentum. If the stack is banging, you are making noise, not training the inner thigh. This one shines as a finisher or accessory after the big lower-body lifts, and it is handy for training around fatigue because you get local work without taxing the whole system.

The 7 moves at a glance

You do not need all of them. Use this to pick two or three that match your level, your equipment, and your knees.

Consistency beats intensity

You do not need all seven movements. You need a plan you will repeat. Pick two or three that fit your body, your equipment, and your current level, then do them well for long enough to get stronger.

A simple split works. Use one compound movement, one lateral movement, and one isolation or floor-based movement. That might be a sumo squat, a lateral lunge, and a glute bridge with a squeeze. Or a Cossack squat, the seated adduction machine, and cable hip adduction. There is no prize for choosing the hardest version too early. For most people, two or three focused adductor sessions a week, folded into normal leg training, is plenty. Add a little load or a little range over time and let progress come from repetition rather than punishment.

It is also worth dropping the old spot-reduction myth. You can strengthen and build the adductors directly. You cannot order your body to lose fat from one area first. The useful target is stronger inner thighs, steadier knees, and better control. Any visual change comes from that plus broader training and nutrition habits.

Keep the habit visible

Accessory work is easy to skip because it does not feel heroic, which is exactly why people stop seeing progress. Track something simple: reps, load, range of motion, and how stable the movement feels. If you like a bit of friendly pressure, MoveTogether can keep the habit alive even when your friends use different devices. Streaks & Shields protect your consistency on the days life gets in the way, and Past You Ghost lets you race your own best week instead of only chasing the fittest person you know.

Because everyone tracks differently, the scoring matters. You can compete on Ring Close Count, Percentage of Goals, Raw Numbers, Step Count, or Workout Based, so a group on Apple Watch, Garmin, and Fitbit can share one honest leaderboard. That cross-device fairness is the point. Raw numbers from different devices are not directly comparable, so they need a common frame before anyone competes. If motivation is the sticking point, Coach Mo is built for encouragement and competition strategy rather than writing you a strict sets-and-reps plan.

If you want a straightforward way to stay consistent with your inner-thigh work, MoveTogether is built for that. It pulls activity from Apple Health, Fitbit, Garmin, WHOOP, Oura, Strava, Polar, and iPhone-only tracking, then turns it into competitions you will actually care about. Use it alongside your regular training, not instead of it. It keeps things simple with two plans, Free and Pro, and it leans on Move Leagues for a fresh cohort each week. It does not do GPS routes and never will, so keep using Strava for that if you want. Pick your exercises, log your progress, invite a friend, and stay honest.

Third-party device and platform names belong to their respective owners. The MoveTogether app is iOS-only as of mid-2026, with Android on the waitlist. Nothing here is medical advice. If you have a knee, hip, or groin injury, check with a professional before loading these movements.

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