Windshield Wiper — Legs Extended: A Complete Guide
Quick Intro
Windshield Wiper — Legs Extended is a dynamic stretch performed lying on the back with both legs raised straight up toward the ceiling and the arms extended out to the sides for a wide base, slowly letting both straight legs fall together toward one side before sweeping them to the other. Straightening the legs turns the bent-knee version’s rotational sweep into a considerably longer lever on the obliques and hips.
Equipment Needed
No equipment is required, though a yoga mat is a reasonable addition for anyone lying on a hard floor.
Why It Matters
A straight-leg lever raises the demand on rotational core control well beyond a bent-knee sweep. As a bodyweight movement, only dropping the legs as far as the shoulders can stay flat keeps the exercise within the range the trunk can control. It works well as a more advanced spinal and hip rotation drill once the bent-knee version feels easy.
When to Do It
Place this early in a session, as part of a floor-based mobility routine, once the bent-knee version already feels controlled. Anyone with a diagnosed lower back or disc condition should get clearance from a doctor or physical therapist before adding this much leverage to a rotational spinal movement.
Getting Ready
A few reps of the bent-knee windshield wiper first confirm the hips and low back are ready for the added leverage here. Raising the legs and pausing briefly before the first sweep is a reasonable way to check how much control is available that day.
Step-by-Step Instructions
- Lie on the back with both legs raised straight up toward the ceiling.
- Extend both arms out to the sides for a wide, stable base.
- Slowly let both straight legs fall together toward one side.
- Sweep the legs back up and across to the other side.
- Continue alternating sides for the full set, moving slowly throughout.
How Many, How Often
| Level | Reps (both directions) |
|---|---|
| Beginner | 5-6 |
| Intermediate | 6-8 |
| Advanced | 8-10 |
Only lowering the legs as far as the shoulders can stay flat on the floor matters more here than how close the feet get to the ground. This is not a place to let momentum carry the legs down, since the straight-leg lever multiplies whatever force gets applied.
Modifications and Variations
Easier: Windshield Wiper. Bent knees shorten the lever arm a great deal and make the same rotational sweep more manageable.
Common Mistakes to Avoid
Letting the shoulder blades lift off the floor. With straight legs providing so much extra leverage, this happens faster and more easily than in the bent-knee version, so it deserves even closer attention here.
Using momentum instead of control to drop the legs. The straight-leg lever means momentum builds up much faster than it does with bent knees, making a controlled, deliberate pace essential.
Lowering the legs further than the shoulders can control. Chasing a bigger range before the trunk can manage the straight-leg lever risks straining the low back for no benefit.
After Your Set
A supine single knee-to-chest hold, pulling one knee gently toward the chest with both hands, finishes easing the low back and hip this rotating motion just worked.
Going Deeper
The marker of progress here isn’t how close the feet get to the floor, it’s whether the shoulder blades stay planted through the entire straight-leg sweep. Once that control feels solid on both sides, the range can grow gradually over further sessions. A big straight-leg range achieved by letting the shoulders lift trades the benefit of the drill for a bigger-looking movement.
How to Know You’re Improving
- The shoulder blades stay flat on the floor through the whole sweep.
- The legs stay reasonably straight rather than bending to compensate.
- The fall is controlled rather than driven by momentum.
- Both sides reach a similar, comfortable range.
- The legs can lower a little further each session without losing shoulder contact.
Muscles Worked
- Obliques (the muscles along the sides of the abdomen, controlling the rotation)
- Erector Spinae (the muscles running along the length of the spine, working to control the sweep)
- IT Band and Tensor Fasciae Latae (a band of connective tissue down the outer thigh and the hip muscle that tensions it, stretching as the legs fall)
- Gluteus Medius (a smaller glute muscle at the side of the hip, stabilizing through the rotation)
- Rectus Abdominis (the front abdominal muscle, bracing to control the straight-leg lever)
- Biceps Femoris (the outer hamstring at the back of the thigh, engaged holding the legs straight)
FAQ
Why do straight legs make such a big difference? A straight leg moves the weight further from the hip joint, which multiplies the rotational force acting on the obliques and low back for the same range of motion. That’s what makes this version considerably more demanding than the bent-knee original.
Should the knees stay perfectly locked straight? Close to straight is the goal, but a very slight, natural softness in the knees is fine. Forcing them rigidly straight adds nothing useful and can create unnecessary tension elsewhere.
Is it normal to only be able to lower the legs a small amount at first? Yes, a small range with the shoulders staying flat is far more valuable than a big range achieved by letting the shoulders lift. The range will grow naturally as trunk control improves.
When is someone ready to try this version? Once the bent-knee windshield wiper feels easy and well controlled through a full set, trying this version with a smaller starting range is a reasonable next step. Skipping straight to this version before the basics are solid usually just reproduces the same shoulder-lifting problem with more leverage behind it.
Which way should the palms face? Toward the floor. Pressing the palms and the backs of the arms into the floor gives the shoulders something to anchor against as the legs fall away to one side.
Do the legs stay together? Yes. The feet and knees stay touching so the legs move as one piece. If the top leg slides ahead of the bottom one, the hips have rolled further than the trunk can control.
Is this appropriate for someone with lower back sensitivity? The added leverage makes this a poor starting point for anyone with lower back sensitivity, and a doctor or physical therapist should weigh in before adding it. The bent-knee version is a more appropriate choice in that situation.
Related to Windshield Wiper, the easier bent-knee version.