Your Body Has Been Sitting for Nine Months. Summer Just Asked It to Move Again.

There’s a particular kind of physical reckoning that happens every June in the South Bay. The desk-bound routines of fall, winter, and spring — the hours of commuting, the back-to-back Zoom calls, the laptop posture — give way to hiking at Rancho San Antonio, weekend cycling along the Los Gatos Creek Trail, evening runs through Almaden, and the general physical ambition that warm weather reliably inspires.

The transition itself is the problem. The body that spent months in a flexed, seated position is being asked, without much preparation, to extend, propel, and sustain physical output at a level it hasn’t experienced since last fall. And the muscle group that bears the heaviest cost of that transition is one most people haven’t thought about once during the preceding nine months.

The hip flexors.

At The Stretch Masters in San Jose, this is one of the most consistent presenting patterns the clinical team sees in early summer: patients arriving with deep anterior hip pain, groin tightness that limits stride length, lower back ache that appears during or after activity, or a general sense of stiffness and inefficiency that makes summer exercise feel harder than it should. The history is almost always the same — extended period of desk work or sitting, followed by a sudden increase in physical activity.

What’s different about The Stretch Masters is how the problem gets addressed. The team is physician-supervised, with physical therapists providing assisted stretching and myofascial release work that goes meaningfully deeper than anything a foam roller or a yoga class accomplishes on its own.

What Sitting Does to Your Hip Flexors Over Time

The hip flexor group — primarily the iliopsoas (the psoas major and iliacus combined) and the rectus femoris — is designed to generate the forward swing of your leg during walking, running, and climbing. It also stabilizes the spine and pelvis during upright movement.

When you sit, the hip flexors shorten. Eight, ten, twelve hours a day of sitting keeps them in a partially contracted position. Over weeks and months, the muscle tissue and the surrounding fascia — the connective tissue matrix that encases the muscle — adapt to this shortened state. The muscle loses extensibility. Trigger points develop — localized areas of chronic contraction within the muscle tissue that are palpably tender and that refer pain to predictable locations, including the low back, the anterior thigh, and the groin.

When you stand up from this adapted position and try to run, bike, or hike, several things happen:

The shortened hip flexors restrict full hip extension behind you — which limits stride length and forces compensatory movement patterns in the lower back and knee. The chronically contracted psoas pulls the lumbar spine into an exaggerated anterior curve, increasing compression on the lower lumbar discs. Trigger points that were dormant during sitting become acutely painful when the muscle is asked to contract through its full range under load.

This is why many patients describe a strange pattern: they feel fine sitting at a desk all day, but thirty minutes into a summer hike they’re stopping with hip or low back pain that wasn’t there the week before.

The Myofascial Piece That Self-Stretching Misses

Standard hip flexor stretches — the kneeling lunge, the standing quad pull — address the muscle in its middle range but don’t reach the deeper, restricted areas of the iliopsoas where fascial adhesions and trigger points accumulate. Self-stretching also can’t apply the sustained, directed pressure that releases myofascial restriction at the tissue level.

The Stretch Masters uses assisted stretching techniques that precisely position the joint and apply controlled, progressive force through the full range of hip extension — reaching the hip flexor in positions that are biomechanically impossible to achieve alone. Combined with hands-on myofascial release work that targets trigger points within the psoas and iliacus, the sessions address not just muscle length but tissue quality: how freely the muscle slides within its fascial sleeve, and whether the trigger points that generate pain and restrict movement are being actively released.

This is the functional difference between physician-supervised assisted stretching and a general flexibility class. The clinical framework — the ability to assess which structures are restricted, where trigger points are located, and how to address them systematically — produces results that passive stretching cannot.

What to Expect at The Stretch Masters

First sessions begin with a thorough movement assessment: range of motion testing at the hip and lumbar spine, palpation of the major hip flexor musculature, identification of trigger point patterns, and a conversation about activity history, goals, and any current symptoms.

Based on that assessment, your stretch therapist designs a session targeting the specific restrictions driving your presentation. For most early-summer patients presenting with hip flexor tightness, the session focuses on progressive hip extension stretching, piriformis and gluteal work to address the posterior chain compensation patterns that frequently co-develop, and myofascial release of the deep hip flexors in supine positions where the psoas can be accessed without guarding.

Most patients report immediate improvement in hip extension range and reduction in the pulling sensation at the anterior hip. Persistent trigger point patterns typically require a series of sessions to fully resolve — the tissue changes that accumulate over months of sitting don’t reverse in a single appointment — but the trajectory of improvement tends to be clearly positive from the first visit.

The Difference Physician Supervision Makes

Most assisted stretching providers are staffed by fitness professionals with flexibility training. The Stretch Masters is different: the clinical staff includes both physicians and physical therapists, meaning the assessment and treatment of your hip flexors happens within a medical framework, not a wellness one.

For a patient who has been managing low back pain they attribute to posture or stress, the possibility that the primary driver is a restricted psoas pulling on the lumbar spine isn’t something a fitness-focused stretching session would identify or address. For a patient returning from an injury whose hip extension range hasn’t fully recovered, having a physical therapist assess whether the restriction is muscular, fascial, or joint-related changes the entire approach. This clinical underpinning is what makes sessions at The Stretch Masters produce durable functional improvement rather than temporary relief.

Summer Moves Better When You Prepare for It

The Stretch Masters serves San Jose, Los Gatos, and the surrounding South Bay area from the Blossom Hill Road clinic. Sessions are available Monday through Friday. New clients are welcome to schedule online or call (408) 521-0080 to discuss their needs before booking. The summer you’re planning — the trails, the rides, the evening runs through the neighborhood — starts with a body that can actually do it without fighting against nine months of desk work.