Form cues
- Keep arms straight
- Brace your core
- Rotate shoulders not just arms
- Don't round your lower back
Exercise
Waist, body weight

Seated torso rotation with arms straight to target the obliques and core stability.
Target: obliques. Also works: rectus abdominis, transverse abdominis, hip flexors.
Form cues
Common mistakes
Exhale as you twist, inhale returning to center.
In the app, search for Seated Straight Arm Twist and add it to a workout.