# Hanging Knee Raise - Canonical: https://fitwill.app/exercise/11426/hanging-knee-raise/ - Media ID: 11426 - Primary muscle: Abs - Body part: Core - Equipment: Pull-Up Bar - Video: https://fitwill.app/videos/11426/hanging-knee-raise.mp4 ## Description The Hanging Knee Raise is a bodyweight core exercise performed from a dead hang on a pull-up bar. You grip the bar overhead with straight arms, let the body hang fully, then draw your knees up toward your chest by flexing the hips and curling the pelvis underneath you. Because your entire body is suspended, there is no floor or bench supporting your spine, so your trunk has to stabilize itself in space while the legs move. This movement is one of the most practical ways to load the lower portion of the abdominals. When you hang and lift your knees, the rectus abdominis, especially its lower fibers, works to tilt the pelvis and round the trunk, while the hip flexors drive the legs upward. That distinction matters: the abs should curl the pelvis, not just hold still while the hip flexors swing the legs. Done correctly, you feel the front of your midsection doing the lifting rather than the tops of your thighs doing everything. The Hanging Knee Raise suits a wide range of trainees. Beginners use it as the entry point before progressing to straight-leg hanging leg raises, and intermediate lifters use it for higher-rep ab finishers. It is also a favorite in calisthenics and climbing communities because it builds hanging tolerance, grip endurance, and shoulder stability at the same time as trunk strength. Setup quality determines whether this exercise helps or frustrates you. Grab the bar slightly wider than shoulder width with a full overhand grip, hang with arms extended but shoulders actively pressed down away from your ears, and let your legs hang still before starting. A swinging body turns the movement into momentum-driven leg swings that rob the abs of work and strain the shoulders and lower back. Taking a beat to dead-hang quietly before each rep is the single biggest form upgrade most people can make. Execution comes down to one cue: curl, don't just lift. Exhale as you pull your knees up past hip height, imagining tucking your tailbone toward your ribcage so the lower back rounds slightly rather than arching. Pause briefly at the top, then lower with control until the legs are straight again and the swing has died before repeating. Breathe out on the lift, in on the descent, and stop the set when your grip gives out or your lower back starts to arch and swing replaces control. Because the exercise demands a bar you can hang from safely with feet clear of the floor, check that your setup is stable and the bar is rated for your weight before starting. If hanging is uncomfortable or your grip fails early, that is a training limitation to work around with straps, an assisted knee raise station, or floor-based alternatives, not a reason to push through shoulder or hand pain. ## Instructions 1. Stand under a securely mounted pull-up bar and reach up to grip it with an overhand grip, hands slightly wider than shoulder width so the knuckles face away from you. 2. Pull yourself into a dead hang with arms fully extended, feet off the floor, and legs together and straight beneath you. 3. Set your shoulders by pulling them slightly down away from your ears so you are not sagging into the joint, and brace your trunk lightly. 4. Exhale and draw your knees up in front of you, bending at the hips and knees, until your thighs are at or above parallel to the floor. 5. At the top, tuck your pelvis under so your lower back rounds gently and your knees travel toward your chest rather than straight up in front. 6. Pause for a beat in the curled position and feel the front of your midsection contracting before starting the descent. 7. Lower your legs slowly and under control until they are fully extended and your body returns to a still dead hang. 8. Wait for any swing to settle completely before starting the next rep, re-bracing each time. 9. Inhale at the bottom, exhale as you lift, and keep your arms straight throughout; do not bend the elbows or pull with the upper body. 10. Finish the set when your grip fatigues or your form drifts, then step down with both feet rather than dropping. 11. Reset your grip and shoulder position fully between sets to keep the hang stable. ## Tips & Tricks - The most common fault is swinging the legs to build momentum. If your body starts rocking, shorten the range, slow the tempo, and pause one full second in the dead hang between reps until the swing disappears. - If your knees rise but your lower back stays arched, the hip flexors are doing the work alone. Focus on tucking the tailbone up toward your ribs so the abs curl the pelvis instead of just holding on. - Grip failure usually ends sets before the abs do. Chalk your hands, alternate your grip style, or use lifting straps once your grip is the limiting factor and the abs still feel fresh. - Avoid shrugging into the bar as you tire. Actively press the shoulders down through every rep to keep tension off the neck and protect the shoulder joints. - Keep the knees bent at roughly 90 degrees consistently. Letting the knees drift straighter mid-set quietly converts the exercise into a harder leg raise and often causes form to break down. - Do not chase reps at the cost of the pelvic curl. Six clean reps with a visible tuck at the top build more lower ab strength than fifteen fast knee swings. - If calluses or hand discomfort limit you, grip the bar deep in the fingers rather than the palm and consider gloves or grips for longer sets. - Point your toes gently and keep the legs together; splayed or scissoring legs signal fatigue and make stabilizing the hang harder. - Work on your dead hang separately if you can only manage a few seconds. A comfortable 20 to 30 second hang gives the abs a fair chance before the grip quits. ## Frequently Asked Questions ### What muscles does the Hanging Knee Raise work? The primary muscles are the lower abdominals, specifically the rectus abdominis working to curl the pelvis, with strong assistance from the hip flexors such as the iliopsoas and rectus femoris. Your grip, forearms, lats, and shoulder stabilizers also work isometrically to hold the dead hang. ### Is the Hanging Knee Raise good for beginners? Yes, it is the standard beginner version of hanging ab work because bending the knees shortens the legs and reduces the load on the trunk. If even this version is too hard, start with a captain's chair or lying knee tucks and build hanging tolerance first. ### How high should I raise my knees during the Hanging Knee Raise? Lift until your thighs are at least parallel to the floor, then tuck the pelvis so the knees finish close to your chest. The tuck at the top is what makes the abs, rather than only the hip flexors, do the work. ### Why does my body swing when I do Hanging Knee Raises? Swinging happens when the legs are lowered too fast or lifted with momentum instead of muscle control. Slow the descent, pause in a still dead hang between reps, and re-brace before each lift to eliminate it. ### What can I use instead of a pull-up bar for Hanging Knee Raises? An assisted knee raise station or captain's chair supports your back and forearms while the legs lift, and suspension straps can substitute for the bar. Lying knee tucks or reverse crunches on the floor train a similar pattern without any hanging requirement. ### My grip gives out before my abs fatigue. What should I do? Use lifting straps, chalk your hands, or choose a supported variation like a knee raise station so the abs can be the limiting factor. Building your dead hang time with dedicated practice also raises your grip ceiling over weeks. ### Should my arms stay straight during the Hanging Knee Raise? Yes, the arms remain fully extended for the entire set; this is not a pull-up. Bending the elbows or pulling with the upper body shifts work away from the abs and usually accompanies swinging. ### Is it safe for my lower back and shoulders? When performed with a controlled tempo, active shoulders, and a pelvic tuck rather than an arched spine, it is generally well tolerated. Stop if you feel pinching in the shoulders while hanging or any lower back strain as the legs lower, and regress to a supported version. ### How do I progress from the Hanging Knee Raise? Progress by straightening the legs toward hanging leg raises, pausing longer at the top, slowing the lowering phase, or adding a slight twist to involve the obliques. Adding weight at the ankles is a later step once strict bodyweight reps are comfortable. ### How many reps and sets of the Hanging Knee Raise should I do? Two to four sets of 8 to 15 controlled reps works well for most goals, with the set ending when form or grip breaks down. Since it is demanding on the grip and trunk, train it fresh rather than as a rushed finisher if core strength is your priority.