# Lying Down Hip Internal External Rotation - Canonical: https://fitwill.app/exercise/8490/lying-down-hip-internal-external-rotation/ - Media ID: 8490 - Primary muscle: Hips - Body part: Hips - Equipment: Body Weight - Video: https://fitwill.app/videos/8490/lying-down-hip-internal-external-rotation.mp4 ## Description Lying Down Hip Internal External Rotation is a simple bodyweight drill performed on your back that trains the rotational capacity of the hip joint in both directions. You lie supine with your hips and knees bent to roughly 90 degrees, then rotate the thighs so the knees fall outward into external rotation and rotate inward so the knees come together into internal rotation. Because your spine is fully supported by the floor and there is no load to balance, the exercise isolates the hip rotators with very little competing tension from anywhere else. The muscles doing the work are the deep rotators of the hip. External rotation draws on the gluteus maximus and the deep hip rotators, while internal rotation relies on the front fibers of the gluteus medius, the tensor fasciae latae, and the adductors assisting as the thighs swing inward. The core works quietly in the background to keep your pelvis from rocking as the legs move. Most people notice one direction feels far easier than the other, which is exactly the kind of asymmetry this exercise is good at revealing. This movement is especially useful for anyone whose hips feel stiff after long periods of sitting, for runners and lifters who want their hips to move well before heavier training, and for people rehabilitating or prehabbing the hip area under the guidance of a professional. It is also a popular warm-up drill because it takes the hip joint through rotation without impact or load. Office workers, older adults, and beginners all tend to get a lot out of it precisely because it asks nothing of the lower back and requires no equipment. Setup matters more than it looks. Lie with your low back in a neutral position, ribs relaxed down, and let the weight of your legs be carried by your hips rather than by tension in your neck and shoulders. If your pelvis rolls from side to side as the knees move, the rotation is coming partly from your spine instead of your hips, which reduces the effect on the target muscles. Keep the range honest: a controlled 45 degrees of clean rotation beats a forced, wobbly attempt to touch the knees to the floor. Execution is slow and deliberate. Let the knees drift open and outward until you feel a gentle working sensation across the outer hips, pause briefly, then rotate the thighs inward until the knees meet or nearly meet and the soles of the feet turn away from each other. Imagine the femurs spiraling in their sockets rather than the legs simply swinging. The whole cycle should take several seconds in each direction. A typical session uses eight to fifteen rotations in each direction, one to three rounds, either as a warm-up or as a standalone hip mobility block. If lying flat is uncomfortable for your lower back, placing a small cushion under the hips or slightly lowering the bend of the knees usually solves it. Mild stretching sensation is expected; pinching, clicking with pain, or sharp discomfort is a signal to reduce the range and work within it. ## Instructions 1. Lie on your back on the floor or an exercise mat with your arms relaxed at your sides and your palms facing down. 2. Bend your knees and lift your legs until your hips and knees are both bent to about 90 degrees, with your shins roughly parallel to the floor. 3. Set your starting position with the knees touching or close together and the soles of your feet facing each other. 4. Gently brace your abdominals so your low back rests in a neutral position against the floor, and let your shoulders and neck stay loose. 5. Slowly rotate both thighs outward, letting the knees drift apart to the sides into external rotation until you feel mild tension across the outer hips. 6. Pause for a moment in the open position, then rotate the thighs in the opposite direction, bringing the knees together while the soles of the feet turn outward into internal rotation. 7. Keep your pelvis still throughout the movement so the rotation happens at the hip joints rather than through your lower back. 8. Breathe steadily, exhaling as the legs move in each direction, and never hold your breath during the rotations. 9. Continue alternating between external and internal rotation for your target number of repetitions, moving at a pace of two to three seconds each way. 10. When finished, bring your knees together over your hips and lower one foot at a time back to the floor to reset. ## Tips & Tricks - The most common mistake is letting the pelvis roll with the legs, which turns a hip rotation drill into a lower-back twist. Anchor your awareness on keeping both sides of your sacrum evenly weighted on the floor. - If your knees will not fall very far open, do not press them down with your hands. The range improves with consistent, easy repetitions, not force. - Keep the bend in your knees constant. Straightening the legs as they move changes the exercise into a different hip pattern and reduces the rotational work. - A pinch at the front of the hip during internal rotation usually means the thigh is drifting toward the chest. Keep the 90-degree hip angle instead of letting the knees pull in toward you. - Move slower than feels necessary. Rushing the transitions is the main reason people lose the sensation in the outer hips and only feel the low back working. - If one side rotates noticeably further than the other, spend an extra set or two on the stiffer side rather than matching reps symmetrically forever. - Rest your head flat without tucking your chin to your chest; neck tension during this drill usually signals that you are forcing the range. - Place a thin pad under your sacrum if a hard floor bothers your tailbone, but avoid a thick cushion that tilts the pelvis and changes the hip angle. - Treat this as a warm-up or recovery drill rather than a maximum-effort exercise. Chasing end-range leverage defeats the purpose of the movement. ## Frequently Asked Questions ### Which muscles does the Lying Down Hip Internal External Rotation work? It primarily targets the rotators of the hip, including the gluteus medius and gluteus maximus, with the tensor fasciae latae and adductors assisting as the thighs rotate inward. The core works lightly to keep the pelvis stable. ### Is this exercise suitable for complete beginners? Yes. It is performed lying down with no load, so it is one of the most accessible hip drills available. Beginners should simply keep the range small and controlled. ### Why is the exercise done lying on the back instead of standing? Lying down removes the demand of balancing and supporting your body weight, so the hip rotators can be trained in isolation with the floor supporting the spine and pelvis. ### How do I know if I am rotating from the hips and not twisting my lower back? Watch or feel your pelvis: it should stay level and still while only the thighs rotate. If your beltline or hip points visibly tilt as the knees move, reduce the range. ### How is this different from a clamshell exercise? A clamshell is done on your side and trains only external rotation against gravity, while the Lying Down Hip Internal External Rotation is done on your back and works the hip through both internal and external rotation. ### One direction of rotation feels much tighter than the other. Is that a problem? It is very common, especially if you sit for long hours. Work both directions, giving extra gentle repetitions to the tighter side, and avoid forcing the restricted range. ### My hips click during this movement. Should I stop? Painless clicking is usually harmless, but reduce the range so it disappears. If the clicking comes with pain, pinching, or discomfort, ease off and consult a qualified professional before continuing. ### How many reps and sets of the Lying Down Hip Internal External Rotation should I do? Eight to fifteen controlled rotations in each direction for one to three rounds works well, either as a warm-up before training or as a standalone hip mobility block. ### Can I do this exercise every day? Yes, in most cases the low-load nature of the drill makes daily practice reasonable. Keep the intensity gentle so the hips respond to repetition rather than strain. ### Do I need any equipment for this exercise? No equipment is required beyond a floor or thin exercise mat for comfort. Everything else comes from your own body position and controlled movement.