Half Kneeling Hip Flexor Stretch
Also known as Kneeling Hip Flexor Stretch, Half-Kneeling Lunge Stretch, Kneeling Lunge Stretch, Hip Flexor Lunge Stretch, Kneeling Psoas Stretch
Quick Facts
- Difficulty:
- Beginner
- Best For:
- Hip Mobility, Desk Workers, Posture, Movement Breaks
- Primary Muscles:
- Iliopsoas, Rectus Femoris
- Equipment:
- None
The Half-Kneeling Hip Flexor Stretch is a kneeling lunge position where the back hip is pushed forward to lengthen the front of the hip. It targets the iliopsoas and rectus femoris, the main hip flexors that spend most of the day in a shortened position when you sit. People often include it in programs aimed at improving posture and hip mobility.
Benefits
- Puts the hip flexors through a longer range of motion after long periods of sitting, which many desk workers find helpful for reducing feelings of stiffness.
- The pelvic tuck and gentle glute squeeze help position the pelvis during the stretch and encourage active control rather than passive stretching alone.
- The half-kneeling base challenges balance and core stability, so it doubles as a small stability drill.
- Done on one side at a time, which makes it easy to spot and address differences between the left and right hip.
- A few rounds during the workday can be a useful movement break after long periods in the same position.
- Sitting keeps the hips flexed for hours at a time. This stretch places the back hip into extension, a position many desk workers rarely use during the day.
- No equipment, no warm-up needed. Works at home, in a hotel room, or in a quiet office corner.
How to perform it
-
01
Kneel on one knee with the other foot flat on the floor in front of you. Both knees should bend at roughly 90 degrees.
-
02
Place a folded towel or mat under the down knee if the floor is hard.
-
03
Stack your shoulders over your hips and let your arms rest at your sides or on your front knee.
-
04
Tuck the pelvis slightly by squeezing the glute on the down-knee side. This is what actually starts the stretch, before you move at all.
-
05
Shift your weight gently forward by pressing the back hip toward the front. Keep the upper body tall.
-
06
You should feel a stretch at the front of the back hip and possibly down into the thigh.
-
07
Hold for 20 to 30 seconds. Breathe normally and avoid holding your breath.
-
08
Switch sides and repeat. Compare the two sides to spot any tightness differences.
Common mistakes
- Letting the lower back arch and the ribs flare instead of tucking the pelvis. This shifts the stretch away from the hip flexor and into the lower back.
- Leaning the upper body forward to "find" the stretch. Stay tall, move the hip.
- Pressing forward too aggressively, which can irritate the knee or the lower back.
- Forgetting the glute squeeze. The squeeze on the down-knee side is what makes the stretch actually target the hip flexor.
- Holding the breath. Slow breathing helps the muscle relax into the stretch.
- Rotating the pelvis or twisting the torso to one side instead of staying square to the front.
Contraindications
Muscles worked
Primarily stretches the iliopsoas, which runs from the lower spine and pelvis to the top of the thigh, and the rectus femoris, the quadriceps muscle that also crosses the hip. The rectus femoris stretches more when the back knee is closer to the floor and the heel is closer to the glute. The pelvic tuck activates the glutes and abdominal muscles while placing the hip flexors in a more stretched position. The front leg's quad and core also work isometrically to keep the upper body stacked and tall.
Why It's In My Workouts
This one made my list because I could feel the change after just a couple of weeks. After full days of sitting, my hips felt so stiff that standing up felt like unfolding a deck chair. Two or three rounds of this stretch during the day, plus a little glute work, and my hips started feeling open again. I like that I can do it anywhere with enough floor for one knee, and the pelvic tuck cue is a small thing that completely changes where the stretch lands. It pairs naturally with the Deep Squat Hold as a hip duo, one stretches the front, the other opens the back.
FAQ
Where should I feel the stretch?
At the front of the back hip and sometimes down the front of the back thigh. If you feel it mainly in the lower back, you're probably arching instead of tucking the pelvis.
How long should I hold it?
20 to 30 seconds per side is a good starting point. You can repeat 2 or 3 rounds per side if you have more time.
How often can I do this?
Daily is fine for most people. Many desk workers do it once or twice during the workday as a reset between long sitting blocks.
Can this fix anterior pelvic tilt?
It may be one useful piece of a broader program that includes strength training, movement habits, and overall activity levels. Stretching alone rarely changes posture permanently. On its own, it loosens the front of the hip but doesn't change the underlying habits that pull the pelvis forward.
Why does my knee hurt on the floor?
Most often the floor is too hard or you're putting too much pressure straight down on the kneecap. Use a folded towel, mat, or pillow under the knee, and avoid resting bone directly on a hard surface.
Is this the same as a runner's lunge stretch?
Very similar. A runner's lunge usually involves more forward lean and is often done as part of a dynamic warm-up. The Half-Kneeling Hip Flexor Stretch is more upright and held longer, which targets the hip flexor more cleanly.
Use this exercise
Routines and packs that include the Half Kneeling Hip Flexor Stretch.
By Denys Soloshenko
Founder, 1 Pixel Workout
Last updated: June 2026