Stand with feet hip-width apart, holding a dumbbell or kettlebell. Extend one leg forward. Lower your body into a squat on the supporting leg, keeping your chest up and back straight, thigh parallel to the ground. Pause, then press through your heel to return to the starting position. Alternate legs.
Engage your core for stability. Keep your knee aligned with your toes. Start without weights to master form. Use a bench for support if needed. Control the movement.