Dumbbell Cossack Squats (VERSION 2)
- Target muscle
- —
- Equipment
- Dumbbell
- Body part
- Thighs
- Type
- Strength
The dumbbell Cossack squat is a deep lateral lower-body movement that loads the thighs through a wide side-to-side stance. Holding a single dumbbell, you shift onto one bent leg while the other stays straight, building strength in the quads, glutes, and adductors while opening up hip and ankle mobility. It is a useful unilateral strength and mobility drill that carries over to squatting, lunging, and athletic movement.
How to do the Dumbbell Cossack Squats (VERSION 2)
- 1Hold a dumbbell at chest height with both hands, cupping one end like a goblet, and stand with your feet much wider than shoulder-width and toes turned slightly out.
- 2Brace your core and keep your chest tall as you begin to shift your weight toward one side.
- 3Bend the working leg and sink your hips down and back over that foot, keeping the opposite leg straight with its toes pointing up.
- 4Lower until the working thigh is roughly parallel to the floor, keeping the heel of the bent leg flat on the ground.
- 5Keep the dumbbell close to your chest and your torso as upright as your mobility allows at the bottom.
- 6Drive through the heel of the bent leg to push back up to the wide standing position.
- 7Shift across to the other side and repeat, alternating legs for your target reps.
- 8Finish your set, then set the dumbbell down safely with control.
Form tips
- Keep the heel of the bent leg planted throughout — if it lifts, widen your stance or reduce depth until your ankles and hips loosen up.
- Push your knee out in line with your toes rather than letting it cave inward, so the load stays on the quads and glutes.
- Move slowly and under control, especially on the way down, to keep tension on the working leg and protect your knees.
- Hold the dumbbell tight to your sternum to counterbalance your weight and help you stay upright at the bottom.
- Start with bodyweight or a light dumbbell to groove the pattern before adding load.
Common mistakes
- Letting the heel of the bent leg rise onto the toes, which shifts you forward and puts extra strain on the knee instead of the thigh.
- Caving the bent knee inward, which loses glute tension and stresses the knee joint.
- Rushing the descent or bouncing out of the bottom, which removes control and increases the risk of tweaking a knee or groin.
- Rounding the back and dropping the dumbbell away from the chest, which pulls you off balance and overloads the lower back.
- Going too deep before your hips and ankles are ready, which forces the heel up and breaks form.
Frequently asked questions
What muscles do dumbbell Cossack squats work?
They mainly work the muscles of the thighs — the quadriceps on the bent leg, the glutes, and the inner-thigh adductors of the straight leg as it stretches. They also challenge hip and ankle mobility and your core stability.
How wide should my stance be?
Stand noticeably wider than shoulder-width, with toes turned slightly out. A wider stance lets you sink deeper and stretch the straight leg, but only go as wide as you can while keeping the working heel flat on the floor.
Are dumbbell Cossack squats good for beginners?
Yes, if you scale them. Begin with bodyweight or a light dumbbell and limit your depth, then add range and load as your hip and ankle mobility improve. Holding the dumbbell at your chest actually helps you stay balanced.
What is a good alternative to the Cossack squat?
Lateral lunges and goblet squats train similar muscles in the thighs and hips. Lateral lunges are the closest match for the side-to-side pattern, while goblet squats build straight-ahead leg strength with less mobility demand.
How many sets and reps should I do?
For strength and mobility, 3 sets of 6 to 10 reps per side with a controlled tempo works well. Use a weight you can move smoothly through a full range without the heel lifting or the knee caving in.
