The hook lying position is a common physical therapy starting posture in which you lie on your back with your knees bent and your feet flat on the floor, roughly hip-width apart. It gets its name from the “hooked” angle of the knees, which typically sit at about 45 to 90 degrees of flexion. The position is a staple in rehabilitation settings because it naturally flattens the lower back toward the floor, unloading spinal structures that can be compressed or irritated in standing or sitting. From this simple setup, therapists build a wide range of exercises targeting the core, glutes, pelvic floor, and breathing mechanics.
How to Get Into Hook Lying Correctly
Start by sitting on the edge of a firm surface, ideally a yoga mat on the floor or a treatment table. Slowly lower yourself onto your back, using your hands behind you for support. Once your shoulder blades and head are resting flat, bend both knees so your feet are flat and about hip-width apart. Let your arms rest at your sides with palms facing down, or place your hands on your lower belly if you plan to work on breathing or core activation.
A few details matter more than they might seem. Your feet should be close enough to your hips that your shins are roughly vertical or angled slightly forward. If your feet are too far away, your hip flexors work harder and your pelvis tilts forward; too close, and you lose the stable base you need for most exercises. Your lower back should have a small, natural curve, just enough to slide your fingers beneath it. Some therapists cue you to gently press that curve toward the floor as a starting exercise in itself, but the resting setup should feel relaxed and neutral.
Head position often gets overlooked. If your chin juts upward and the back of your head lifts off the surface, place a thin towel or small pillow under your skull to keep your neck in a comfortable, neutral alignment. Straining the neck defeats the purpose of the position, which is to let your spine settle into a supported, low-stress posture.
Why Therapists Use This Position for Back Pain
Standing upright compresses the lumbar spine under your full body weight, and for people with irritated discs, narrowed nerve passages, or inflamed joints, that compression can produce significant pain. Lying flat on your back with straight legs is not always better, because fully extended hips can pull the pelvis into an anterior tilt and increase the arch in the lower back. Hook lying splits the difference. The bent knees allow the pelvis to tilt slightly posteriorly, which reduces the lumbar curve and opens the space around the spinal canal and nerve roots.
A clinical study examining axial decompression found that among people who reported low back pain symptoms while standing, roughly 70 percent experienced improvement when placed in the hook lying position.1Journal of Orthopaedic & Sports Physical Therapy. Clinical examination procedures to determine the effect of axial decompression on low back pain symptoms in people with chronic low back pain – Section: RESULTS That is a substantial proportion, and it helps explain why hook lying is often the very first position a physical therapist puts a patient with acute or chronic low back pain into. The relief is largely mechanical: you remove gravitational loading from the spine while also reducing tension in the hip flexors and erector spinae muscles that can pull the lumbar vertebrae into painful positions.
Core Activation and the Drawing-In Maneuver
One of the most common things you will be asked to do in hook lying is the abdominal drawing-in maneuver. This is a subtle contraction where you gently pull your lower belly inward, as if drawing your navel toward your spine, without holding your breath or bracing hard. The goal is to activate the deep stabilizing muscles of the trunk, particularly the transversus abdominis and the internal oblique, rather than the superficial muscles like the rectus abdominis that power a crunch.
Research using ultrasound imaging has examined this maneuver performed in hook lying, measuring the thickness changes of the transversus abdominis and internal oblique during contraction compared to rest.2Journal of Orthopaedic & Sports Physical Therapy (JOSPT). Ultrasound imaging assessment of abdominal muscle function during drawing-in of the abdominal wall: an intrarater reliability study – Section: METHODS AND MEASURES Clinicians use this kind of assessment to see whether a patient can preferentially recruit the deep stabilizers. In rehabilitation, getting these muscles to fire properly is considered a foundational step before progressing to more challenging exercises. Hook lying provides the ideal environment for learning this skill because gravity is not pulling on the trunk, the pelvis is in a neutral position, and the patient can focus entirely on the contraction without worrying about balance or posture.
The drawing-in maneuver pairs naturally with relaxed breathing. Patients are typically instructed to perform normal, easy breathing while maintaining the gentle abdominal contraction in hook lying.3Journal of Physical Therapy Science. The Effects of Deep Abdominal Muscle Strengthening Exercises on Respiratory Function and Lumbar Stability This sounds simple, but many people instinctively hold their breath when they try to engage their core. Learning to breathe through the contraction is a key early skill, because in daily life you need your deep stabilizers working continuously while you breathe, walk, and move your limbs.
Bridging and Its Progressions
The glute bridge is probably the most recognizable exercise that starts from hook lying. You press through your heels, lift your hips off the floor until your body forms a straight line from shoulders to knees, hold briefly, and lower back down. It looks straightforward, but the details of how you set it up and progress it change which muscles do the work and how intensely they fire.
A study comparing several supine bridging variations found that the standard double-leg bridge activated the lumbar multifidus at around 29 to 36 percent of maximum voluntary contraction, the gluteus maximus at up to about 33 percent, and the hamstrings more vigorously during curl-style variations, reaching close to 60 percent of maximum.4PubMed. Magnitudes of muscle activation of spine stabilizers, gluteals, and hamstrings during supine bridge to neutral position Those numbers mean that the basic bridge is more of an endurance-level challenge for the glutes and deep back muscles, while the hamstrings get a more robust strengthening stimulus in certain variations. Moving to a single-leg bridge, or adding an unstable surface like a foam pad, can shift the demand toward the gluteus medius, which is important for hip stability during walking and running.
Hip position also matters. Research on bridging with different degrees of hip abduction found that setting the knees about 30 degrees apart, rather than keeping them together or only slightly separated, produced the highest gluteus maximus activation and the lowest compensatory activity from the erector spinae muscles. It also reduced the tendency for the pelvis to tilt forward during the bridge.5PubMed. Modifying the hip abduction angle during bridging exercise can facilitate gluteus maximus activity If you have been bridging with your knees touching or barely apart and feeling the effort mostly in your lower back or hamstrings, widening your stance to roughly 30 degrees of abduction is a simple modification worth trying.
Adding dynamic movements or instability to the bridge from hook lying further increases the demand on the deep local stabilizers of the spine. A comparison of traditional stable-surface bridging with sling-based bridging found that the sling-based exercise, when combined with dynamic movement, produced significantly greater activation of the transversus abdominis than the traditional approach.6PubMed Central. Differences in transverse abdominis activation with stable and unstable bridging exercises in individuals with low back pain – Section: Abstract This is relevant for people with low back pain, since impaired recruitment of the transversus abdominis is a well-documented issue in that population. It suggests that once the basic bridge feels comfortable and controlled, adding some form of instability is a worthwhile next step, not just a gimmick.
Hook Lying in Sacroiliac and Pelvic Rehabilitation
The hook lying position is not only about the lumbar spine. It serves as a starting point for exercises targeting the pelvis and sacroiliac joint as well. A case report following a woman with left-sided low back pain and sacroiliac joint dysfunction described a treatment program that included muscle activation exercises for the hamstrings, adductor magnus, and anterior gluteus medius, combined with stabilization work for the abdominals and gluteus maximus to maintain corrected pelvic alignment.7PubMed Central. Managing a female patient with left low back pain and sacroiliac joint pain with therapeutic exercise: a case report – Section: INTERVENTION Many of these exercises began in hook lying because the position neutralizes gravity’s effect on pelvic tilt, letting the therapist and patient focus on correcting asymmetries and activating underperforming muscles without the added complexity of an upright posture.
The patient in that case report went from pain ratings of 1 out of 10 at best and 8 out of 10 at worst, along with a 20 percent disability score, down to zero pain and zero disability at discharge, with resolution of leg numbness and other functional limitations.8PubMed Central. Managing a female patient with left low back pain and sacroiliac joint pain with therapeutic exercise: a case report – Section: Measures and Outcome A single case report is not proof that hook lying exercises will produce the same result for everyone, but it illustrates the kind of structured rehabilitation pathway that typically starts in this position and progresses to more functional, weight-bearing tasks.
Pelvic Floor Considerations
If you have ever worked with a pelvic floor physical therapist, you have almost certainly been placed in hook lying. The position relaxes the hip flexors and external rotators enough that the pelvic floor muscles can be isolated more easily. Kegel exercises, pelvic floor relaxation drills, and biofeedback training frequently start here. The logic is the same as for core activation: remove as many competing demands as possible so the target muscles can be felt, contracted, and trained in isolation before layering on the complexity of sitting, standing, or moving.
For postpartum patients and people recovering from pelvic surgery, hook lying often represents the first exercise position that feels safe and manageable. The low demand on the abdominal wall makes it a practical starting point before progressing to seated or standing pelvic floor work. Once a patient can reliably activate and relax the pelvic floor in hook lying, therapists gradually add load, changing positions to sitting, then standing, then incorporating the contraction into functional movements like lifting or coughing.
Common Mistakes and How to Avoid Them
The hook lying position looks so simple that people often assume there is nothing to get wrong. In practice, a few errors are surprisingly common and can undermine the purpose of whatever exercise you are trying to do.
- Flattening too aggressively: Pressing your lower back hard into the floor by squeezing the glutes and tucking the pelvis under is overcorrection. The goal is a neutral spine, not a completely flat one. A small natural curve is fine and expected.
- Feet too far away: When the feet slide out so the knees are only slightly bent, the hamstrings and hip flexors take over from the glutes and deep core during exercises like bridging. Keep the shins close to vertical.
- Gripping with the toes: Curling the toes into the mat is a sign that you are pushing through the forefoot instead of the heel. This shifts work away from the posterior chain. Focus on pressing through the whole foot or slightly emphasizing the heel.
- Breath-holding: Holding the breath increases intra-abdominal pressure in a bracing pattern rather than a stabilization pattern. Breathe normally throughout, even during the drawing-in maneuver or a bridge hold.
- Rib flaring during bridges: As the hips rise, some people let the lower ribs pop upward and the back arch excessively. This indicates the erector spinae are doing the lifting rather than the glutes. Think about keeping the ribs connected to the pelvis as you lift.
These compensations tend to show up more when fatigue sets in or when the exercise is progressed too quickly. If you notice yourself falling into any of them, drop back to a simpler variation and focus on form before adding difficulty.
When Hook Lying Is Not Comfortable
For most people, hook lying is a relief position. But there are exceptions. Some individuals with significant hip flexor tightness or hip joint pathology find that even the bent-knee posture puts uncomfortable pressure on the front of the hip. In these cases, placing a bolster or rolled towel under the knees to support them in a slightly more flexed position can help. People with certain types of spinal stenosis may actually prefer a more flexed posture than hook lying provides, such as lying on their side with knees pulled up, because further flexion opens the spinal canal more.
Pregnant individuals in the second and third trimester are generally advised to avoid prolonged supine lying because the weight of the uterus can compress the inferior vena cava and reduce blood flow. Short bouts of hook lying for exercise may be tolerable, but side lying is usually preferred for longer rest or treatment sessions. If you feel lightheaded or dizzy while on your back during pregnancy, roll to your left side immediately.
People with acid reflux or hiatal hernias sometimes find that lying flat, even with knees bent, worsens their symptoms. Elevating the head of the surface by a few inches, or propping the upper body on a wedge pillow, can allow them to still benefit from hook lying exercises without triggering reflux.
Using Hook Lying Outside of Rehab
You do not need a diagnosis or a prescription to use hook lying productively. It is one of the best positions for a simple daily decompression routine. Spending five to ten minutes in hook lying at the end of a long day of sitting or standing can give your lower back a brief reprieve from gravitational loading. Adding a few rounds of gentle breathing with a light drawing-in contraction turns it into an active recovery practice that costs nothing and requires no equipment.
Athletes use the position as a warm-up or cool-down station. A set of glute bridges from hook lying before a run activates the posterior chain in a low-impact way. Post-workout, lying in the position with knees bent and breathing slowly can help the nervous system shift from a sympathetic, high-alert state to a more parasympathetic, recovery-oriented one. The position’s inherent stability means you can focus entirely on relaxation without needing to hold yourself up against gravity.
For people who work at desks all day, hook lying combined with a gentle pelvic tilt, where you slowly rock the pelvis between a slight arch and a slight flatten, can restore some mobility to a lumbar spine that has been locked in one position for hours. The movement is tiny and should feel like a gentle wave through the lower back, not a forceful crunch. Over time, this simple practice can improve your awareness of pelvic position, which carries over into how you sit and stand during the rest of the day.