Mariposas
Best Hip Flexors Exercises
By Zachary, builder of Mariposas · Reviewed against published exercise-science sources (references)
· Last updated June 2026
The hip flexors sit at the center of almost every athletic movement you do, yet they're almost always trained as an afterthought, a quick stretch at the end of a session if you remember. The group includes the iliopsoas (the iliacus and psoas major working together), the rectus femoris, and several smaller contributors like the TFL and sartorius, and each of these responds a little differently to load, angle, and range of motion. Effective hip flexor training means placing the muscle under tension through its full shortening range, which is very different from the passive lengthening most people think of as "hip flexor work." Junk volume here looks like endless static holds and the same lying leg raise repeated without progression. Track your sessions free in Mariposas and you might even pick up a virtual pet along the way.
How to train your hip flexors
The hip flexors tend to respond well to a mix of end-range loaded work (think exercises where the hip is flexed past 90 degrees under resistance) and dynamic, tempo-controlled movements where you slow down the eccentric phase instead of letting gravity do the job. Because the iliopsoas attaches to the lumbar spine, lifters often notice that fatigue or weakness here shows up as lower back compensation, so many coaches prioritize controlled, stable setups before adding load. Frequency-wise, the hip flexors recover relatively quickly compared to larger prime movers, which is why you'll commonly see them trained two or three times per week without accumulating excessive soreness. Volume tends to stay moderate since they're supporting muscles in most compound lower-body work already.
FAQ
- Why do my hip flexors always feel tight even though I stretch them constantly?
- Tightness that doesn't resolve with stretching is usually a strength or motor control problem, not a flexibility problem. The hip flexors can adopt a "short and guarded" resting tone when they're chronically weak or when they're compensating for underactive glutes. Passive stretching temporarily adds length but doesn't change the underlying neuromuscular pattern. Loading them through their full range, especially with slow eccentrics, tends to produce more lasting relief than any amount of static holds.
- Can hip flexor training reduce anterior pelvic tilt?
- Anterior pelvic tilt involves a relationship between multiple muscle groups, not just the hip flexors. Strengthening the hip flexors through their full range while also building the glutes and deep core muscles is the approach most commonly associated with improvement. Simply stretching the hip flexors without addressing weak antagonists (particularly the glutes and abdominals) often produces limited results because nothing changes the resting pull on the pelvis. Progress here tends to be slow and requires consistent training over weeks, not a single corrective session.
- Is there a difference between training the psoas and training the rectus femoris as a hip flexor?
- Yes, and it's a meaningful one. The rectus femoris crosses both the hip and the knee, so it functions as a hip flexor most effectively when the knee is extended or when extension is resisted. Exercises like straight-leg raises or hanging leg raises with a posterior pelvic tilt hit it more directly. The psoas, by contrast, doesn't cross the knee and is the primary mover in deep hip flexion, especially from a lengthened position. Some exercises bias one over the other, which is why a well-rounded routine typically includes movements from both categories rather than repeating the same pattern.
- How do I know if my hip flexors are actually weak versus just sore from overuse?
- Weakness shows up as an inability to generate force at end-range, meaning the leg drops or the pelvis rocks forward before you complete the movement. Overuse soreness typically presents as a dull ache in the front of the hip or groin area that fades with a brief warm-up and returns after sustained effort. A useful self-check is the standing hip flexion hold: lift one knee to hip height and hold it there with no support for 10 to 15 seconds. If you feel immediate shaking, burning, or hip hike from the opposite side, weakness is likely the issue. If the movement feels fine and the discomfort is more diffuse and appears hours after training, overuse or inadequate recovery is the more probable cause.