KB Suitcase Curtsy Squat

The KB suitcase curtsy squat is a single-arm, single-leg-dominant lower-body exercise that combines an offset kettlebell carry with a crossover squat pattern. Holding the kettlebell in a suitcase position - hanging straight down at your side - forces your obliques and deep core to resist lateral bending while your working leg squats through a diagonal stepping pattern. The curtsy step increases glute medius and adductor demand compared to a standard squat, making it useful for hip stability and single-leg strength work. This exercise suits lifters looking to build unilateral leg strength, anti-lateral-flexion core control, and balance in one movement.

Muscles Targeted

• Primary: Glutes (gluteus maximus and medius), quadriceps
• Secondary: Adductors, hamstrings, obliques
• Tertiary: Core stabilizers, forearm and grip muscles

Starting Position

Stand with feet hip-width apart, holding a kettlebell in one hand at your side in a suitcase carry (arm fully extended, palm facing your body). Keep your shoulders level and resist leaning toward the loaded side. The leg on the same side as the kettlebell will be your primary working, squatting leg.

Execution Steps

1. Initiate the curtsy step: From standing, step your free-side leg diagonally behind and across your working leg, as if curtsying.
2. Lower into the squat: Bend your working knee and hip, lowering your body until your working thigh approaches parallel to the floor while your trailing knee drops toward the floor.
3. Keep the torso upright: Maintain a tall chest and neutral spine, resisting the pull of the kettlebell to one side.
4. Drive back to standing: Push through your working-leg heel to extend your hip and knee, returning to the starting position.
5. Reset and repeat: Bring your trailing foot back beside your working foot before beginning the next rep on the same side.
6. Switch sides: After completing your reps, move the kettlebell to the opposite hand and repeat with the other leg as the working leg.

Form Cues

• Keep the kettlebell arm long and relaxed: Let it hang straight down rather than swinging it forward.
• Track the front knee over the toes: Avoid letting the working knee cave inward during the squat.
• Resist the lateral pull: Brace your obliques to keep your torso upright instead of tilting toward the loaded side.
• Keep most of your weight on the front leg: The trailing foot should only lightly graze the floor for balance, not bear significant load.
• Control the tempo: Lower for 2-3 seconds rather than dropping quickly into the bottom position.

Common Mistakes

• Leaning toward the kettlebell: Letting the loaded side pull your torso sideways reduces core engagement and shifts load off the working leg; keep your ribs stacked over your hips.
• Stepping straight back instead of crossing: A regular reverse lunge step removes the hip-stability challenge that defines the curtsy pattern; cross the trailing leg behind the working leg.
• Rounding the lower back: Losing a neutral spine under the offset load increases injury risk; brace your core before each rep.
• Using too heavy a kettlebell: Excess load causes the torso to collapse toward the weight; choose a load light enough to maintain upright posture.
• Placing too much weight on the trailing leg: This turns the movement into a lunge rather than a single-leg squat; keep the front leg doing the work.

Variations

• Goblet curtsy squat: Hold the kettlebell at chest height with both hands for a more upright torso and reduced anti-lateral-flexion demand.
• Front-rack curtsy squat: Rack the kettlebell at the shoulder to shift the core challenge toward anti-rotation.
• Curtsy lunge: Perform the same crossing step but continue into a lunge rather than a squat, emphasizing the stretch of the glute medius.
• Bodyweight curtsy squat: Remove the kettlebell to learn the movement pattern before adding load.
• Dumbbell suitcase curtsy squat: Substitute a dumbbell for the kettlebell when kettlebells aren't available.

Tips for Progression

• Master bodyweight reps first: Build the balance and coordination of the crossing step before adding a kettlebell.
• Increase load gradually: Add 5-10 pounds once you can complete all reps on both sides with strict form.
• Increase depth over time: Work toward the front thigh reaching parallel to the floor as mobility improves.
• Add tempo work: Slow the descent to 3-4 seconds to increase time under tension and improve control.

Training Notes

Program the KB suitcase curtsy squat as an accessory lower-body movement 1-2 times per week, performing 8-12 reps per side for 2-3 sets. Rest 45-60 seconds between sets. It pairs well after primary squat or deadlift work as a unilateral, stability-focused finisher, and its offset-load core demand also makes it a useful addition to core-stability days.