Legs · Barbell

Barbell Cossack Squat

How to do the barbell cossack squat, the muscles it works, and the mistakes to avoid. Pulled straight from the Kovo app's exercise library.

Animated demonstration of the Barbell Cossack Squat
Equipment
Barbell
Difficulty
Intermediate
Logged as
Weighted reps
Movement
Squat
Mechanic
Compound

How to do it

Hold a barbell across your upper back and stand with a wide stance. Shift your weight onto one leg and sink into a deep squat while the other leg stays straight, then drive back up and alternate to the other side. Keep your grounded heel down throughout.

  1. 1You should feel a deep stretch in the inner thigh of the straight leg
  2. 2The bent leg's glutes and quads drive you up and down
  3. 3Keep your heel grounded and chest proud throughout the movement

Common mistakes

  • Don't round your lower back or let your spine collapse
  • Avoid lifting your heel off the floor
  • Don't let your knee cave in; track it over your toes

Muscles worked

The barbell cossack squat mainly works the quads, glutes, and adductors, with the hamstrings, lower back, upper abs, and calves assisting.

  • QuadsPrimary
  • GlutesPrimary
  • AdductorsPrimary
  • HamstringsSupport
  • Lower BackSupport
  • Upper AbsSupport
  • CalvesSupport

Kovo programs the barbell cossack squat for you and tracks it every session.

We build your whole program, drop the right lifts into each workout, and adjust your weights as you get stronger. Free on iOS and Android.

More quads exercises

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Last reviewed June 2026.