Windshield Wiper

The Windshield Wiper is a rotational core exercise performed lying on your back that targets the obliques and improves spinal mobility. By rotating your legs from side to side while keeping your upper body grounded, you build significant rotational strength and core stability.

How Iridium Programs This

Iridium identifies the high isometric grip demand here and checks your 7-day workout history to avoid scheduling this when your forearms are already fatigued from recent pulling exercises. To drive progression, the system tracks your rep performance relative to body weight and uses RPE data to determine when you have the strength to increase volume or add external load.

Form Cues

Do
  • Press your arms and shoulders firmly into the floor for stability
  • Keep your legs glued together throughout the entire arc
  • Initiate the return to center by contracting your obliques
  • Exhale forcefully as you lift your legs back to the middle
  • Control the descent to feel a stretch in your side body
Don't
  • Don't let your shoulders lift off the ground as legs rotate
  • Don't use momentum or bounce your legs off the floor
  • Don't allow your lower back to arch excessively
  • Don't separate your knees at the bottom of the movement

Common Mistakes

  • Lifting shoulders off the floor
  • Rushing the lowering phase
  • Separating knees or feet
  • Using momentum to return to center

Muscles Worked

This exercise primarily targets the internal and external obliques, which are responsible for controlling the rotation of the pelvis and legs. The rectus abdominis works isometrically to stabilize the torso, while the hip flexors remain engaged to keep the legs elevated throughout the set.

Primary

Obliques

Secondary

General CoreForearms

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