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Kettlebell swings: technique, muscles worked and common mistakes

The kettlebell swing is a hip movement, not an arm movement: you drive your hips forward explosively and the bell rises on that momentum. Done well, it builds the glutes, hamstrings and core while sending your heart rate up. Done badly, it mostly loads your lower back.

In short

  • The swing is built on the hip hinge: you push your hips back rather than squatting down.
  • Your hips power the kettlebell; your arms simply guide it.
  • The Russian swing, to chest height, is the best place to start.
  • Start light, keep sets short and only add weight once your technique is consistent.
  • Neutral back, braced core and neck in line with your spine throughout.

A hip movement first and foremost

Many beginners treat the swing as a front raise or a squat. In fact it is a hinge: your torso tips forward as your hips travel back, your knees stay softly bent, and then your hips snap straight. That fast extension is what gives the kettlebell its speed.

To learn the pattern without weight, stand roughly a foot's length in front of a wall and push your hips back until they touch it, without rounding your back. If you feel a stretch along the back of your thighs, you are on the right track.

The muscles at work

  • Glutes and hamstrings: the engine of the movement. They control the descent and produce the hip extension.
  • Core: abdominals, obliques and back muscles keep your spine stable on every rep.
  • Back and shoulders: your lats keep the bell close to your body, while your shoulders follow without pulling.
  • Forearms: your grip works non-stop, which builds hand strength.

Because the swing works large muscle groups over and over, it is also very demanding for your heart and lungs. A few sets are enough to leave you out of breath, which makes it a useful option when time is tight, say between a day at the office in Geneva and the evening train home.

The swing, step by step

  1. Set-up: feet slightly wider than hip-width, kettlebell on the floor about 30 cm in front of you.
  2. Grip: hinge at the hips, take the handle with both hands, shoulders pulled back, back flat.
  3. Hike: send the bell back between your legs, keeping your forearms against your inner thighs.
  4. Drive: extend your hips hard and squeeze your glutes. The bell rises to chest height, arms straight but relaxed.
  5. Top position: body in one line like a standing plank, abs tight, without leaning back.
  6. Return: let the bell fall, wait until it nears your hips before hinging back, then go straight into the next rep.
  7. Finish: on the final rep, let it swing back between your legs once more and park it in front of you with a flat back.

Breathe out sharply as you drive and breathe in on the way down. That rhythm helps you stay braced.

The most common mistakes

  • Squatting instead of hinging: your knees travel forward, your glutes do less and the swing loses its power.
  • Lifting with your arms: if your shoulders tire before your hips, you are pulling the bell rather than driving it.
  • Rounding your back at the bottom, often through fatigue or a weight that is too heavy.
  • Leaning back at the top: the movement ends when your body is upright, not beyond it.
  • Swinging too low: the bell passes between your thighs, not down by your ankles.
  • Looking at the ceiling or your feet: keep your gaze a few metres ahead and your neck in line with your back.

Russian or American swing?

Russian swingAmerican swing
HeightChest or eye levelOverhead
FocusHips, glutes, powerRange, shoulders, conditioning
Technical demandModerateHigh, needs mobile shoulders
Best forBeginners and most peopleExperienced lifters

The Russian swing is more than enough to get the benefits. The American version adds range of motion, but also extra stress on the shoulders and lower back if your mobility is limited.

First sessions and progression

Starter session (twice a week): 5 minutes of warm-up, then 5 sets of 10 swings with 60 seconds' rest. Add 3 sets of 10 goblet squats.

Short and intense: 20 seconds of swings, 40 seconds' rest, repeated 8 to 10 times. Ideal when you only have a quarter of an hour.

Progression: add sets first, then shorten the rest, and only then increase the weight. Two or three sessions a week give your muscles and tendons time to adapt.

Which weight? A light bell is the right choice while you learn the movement. Most healthy adults move on to a heavier kettlebell once the technique is secure. If you have lower-back pain, ask a coach or physiotherapist for advice before you begin.

Our RDX picks

  • RDX F1 Kettlebell 2 kg – CHF 59.00: a light, filled kettlebell for learning the movement, warming up and mobility work.
  • RDX Fitness Sandbag – from CHF 49.00: a 1200D Cordura nylon bag with eight handles, available in several sizes, for varied hinge and carry exercises.
  • RDX C8 Adjustable Skipping Rope – from CHF 15.20: PVC-coated steel cable and ball-bearing handles, perfect for alternating skipping and swings in a circuit.

Have a look at our kettlebells and the rest of our fitness equipment.

Frequently asked questions

Are kettlebell swings bad for your back?

Not with a neutral back and a suitable weight. Problems mainly arise when you pull with your back or round it at the bottom of the swing.

How many swings should I do per session?

As a beginner, 50 to 80 swings in sets of 10 is plenty. Build up gradually as long as your technique stays clean.

Do swings really work the glutes?

Yes. Together with the hamstrings, the glutes are the main drivers. Squeeze them deliberately at the top.

Can I do swings in a flat?

Yes, if you have enough space in front of and behind you and a solid floor. Always put the bell down gently, for the sake of your parquet and your neighbours.

Ready to get started? Browse our fitness collection. Free delivery in Switzerland from CHF 100 – order before 12:00 and it ships the same day from Meyrin.

Adapted from a guide by the RDX Sports team.

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