Trunk rotates toward the bell side
Anti-rotation core fails; the single-arm demand is the whole point.
Overactive muscles
ObliquesTFL
Corrective work
Foam RollTFL↗StretchQL side-bend stretch↗Hinge · Full Body
Kettlebell Single-Arm Swing
Coaching cues
- Same hip hinge as a two-hand swing; one hand grips the bell
- Resist the rotational pull as the single-arm load tries to twist the trunk
- Drive the hips forward explosively; let the bell float to chest height
- Switch hands at the top or between sets
Common faults 2
Squatting the swing — knees push forward
Knee-dominant pattern replaces the hip hinge; power output drops significantly.
Overactive muscles
QuadricepsHip flexors
Corrective work
Foam RollHip flexors↗StretchHalf-kneeling hip flexor stretch↗