Lateral Lunge: How to Do It, Muscles Worked and Benefits
How to do a lateral lunge with correct form. The muscles it works, why side-to-side training matters, the mistakes that ruin it and variations to progress.
By Mike Shilling, Recovery & Training Editor · Updated 20 August 2026
The glute kickback has an image problem. It turns up in every home workout video, usually done fast, usually with a lower back doing most of the work, and lifters write it off as filler. That's a shame, because done properly it does one thing better than almost anything else: it loads the gluteus maximus through hip extension without putting a single kilo on your spine.
You extend one leg behind you against resistance while the rest of your body stays still. That's it. The simplicity is the point, and the discipline required to keep everything else still is where most people fail.
Start on all fours on a mat, since the quadruped version teaches the pattern best.
The test for whether you are doing it right
Balance an imaginary cup of tea on your lower back. If it would spill, you're arching to gain height and your glute is getting a fraction of what it should. Less range, more squeeze, and the exercise starts working immediately.
Electromyography work has measured this exercise directly, and the numbers are worth knowing before you build a session around it. In a study of therapeutic exercises with and without elastic resistance, quadruped hip extension produced gluteus maximus activation of roughly 21 percent of maximum voluntary contraction unloaded, climbing to around 27 percent once a band was added, with gluteus medius sitting near 24 percent in both conditions (EMG analysis of gluteal exercises with elastic resistance, IJSPT 2018).
Two conclusions follow. Adding resistance genuinely matters, since the band lifted glute max activation by about a quarter. And these are moderate figures, so a kickback belongs alongside your heavy work rather than replacing it. Use it as an accessory, a finisher, or a warm-up to get the glutes firing before you squat.
No load on your spine. Hip thrusts and squats are better mass builders, but both compress the spine. A kickback loads the glute with nothing on your back, which makes it useful when you're managing a niggle or training around back pain.
It teaches you to feel your glutes. Plenty of people go through a whole squat session without their glutes contributing much. Twenty slow kickbacks with a pause at the top wakes the muscle up, and that carry-over into the next exercise is worth more than the kickback itself.
Trains each side separately. Most people have a stronger side and never find out. Unilateral work makes the difference obvious and lets you add a set to the weaker leg.
Almost no kit required. A mat and a band cover it. That's the whole argument for keeping it in a home programme.
Arching the lower back to gain height. The big one, and the reason so many people say kickbacks hurt their back rather than working their glutes. Stop the leg in line with your torso.
Rushing. Momentum does the work and the muscle does very little. Two seconds up, a second held, two seconds down.
Letting the hips rotate open. Your working-side hip drifts towards the ceiling and your glute medius quietly gives up. Keep both hip bones pointing at the floor.
Letting the neck crane. Looking up in the quadruped position stresses your neck for no benefit. Eyes down.
Treating it as a main lift. If kickbacks are the hardest thing in your glute session, your programme needs a hip thrust or a Romanian deadlift at the front of it.
Banded quadruped kickback. Loop a resistance band around the working foot and hold the other end under your hands. Cheapest way to add the resistance that the EMG data says matters, and the tension peaks exactly where the glute is shortest.
Cable kickback. Ankle strap on a low pulley, stand tall holding the frame, and extend the leg behind you. Constant tension through the whole range and easy to progress in 2kg jumps, which makes it the best version if you have access to a cable machine.
Standing banded kickback. Band around both ankles, kick one leg back against it. No floor space needed and easy to do anywhere.
Straight-leg kickback (donkey kick variation). Extending the knee lengthens the lever, so it's harder and pulls in more hamstring. Do fewer reps and expect less glute isolation.
Bench-supported kickback. Chest and forearms on a bench, both feet on the floor, drive one leg back. Removes the wrist and shoulder fatigue of all fours, which lets you focus on the working side.
Kickbacks are accessory work, so put them after the heavy lifting.
Pair them with the heavier movements in our glute exercises guide, grab a set of resistance bands to add load, and put a decent exercise mat under your knees unless you enjoy bruises. Two strength sessions a week is the UK baseline, and this sort of accessory work counts toward it (NHS physical activity guidelines for adults).
The gluteus maximus of the working leg is the target, extending the hip behind you. Your hamstrings assist, your glute medius and deep hip rotators stabilise the pelvis, and on the all-fours version your core and shoulders work hard to stop your body twisting. The standing leg or supporting knee gets an isometric workout you will feel the next day.
For isolating the glute without loading your spine, yes. EMG testing puts quadruped hip extension at roughly 21 percent of maximum voluntary contraction unloaded, rising to about 27 percent with an elastic band added. That is a moderate figure rather than a huge one, so kickbacks work best as an accessory or finisher alongside a heavy hinge or squat, not as your only glute exercise.
They contribute, but they will not do it alone. Muscle grows in response to progressive loading, and a kickback is hard to load heavily. Use hip thrusts and squats or deadlifts as the main drivers, then add kickbacks for extra volume and a strong contraction at the top of the range.
Cable is best if you have access to one, because the resistance stays constant through the whole range and you can add weight in small increments. A band is the cheapest option and gets harder as you extend, which suits the top of the movement well. Machines are convenient and stable but lock you into one path.
You are arching your lower back to get the leg higher instead of extending the hip. The fix is to stop the leg when it reaches in line with your torso, brace your abs hard, and squeeze the glute rather than kicking. Range you steal from your spine does nothing for your backside.
Three sets of 12 to 20 reps per side works well, since the load is light and the muscle responds to volume here. Go slow, pause for a second at the top, and stop a couple of reps short of the point where your form falls apart.
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