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June 30, 2026

Why Does My Lower Back Hurt?

Wondering why your lower back hurts? Most low back pain isn't one big injury. It builds from everyday habits like sitting, lifting, and inactivity. Here are the common causes, and what actually helps.

Person resting a hand on their aching lower back while working at a desk

If you've ever stood up from your desk and felt a dull ache settle into your lower back, you're in good company. Low back pain is one of the most common reasons people come to see me, and one of the most common things people type into their phone late at night: why does my lower back hurt? The reassuring answer is that most lower back pain isn't the result of one dramatic injury. More often, it builds quietly from everyday habits we rarely stop to think about.

Below are the everyday causes I see most in the clinic, and what you can do about each one. If you want the deeper, clinical breakdown (strains, disc problems, spondylolisthesis, and the like), I covered those in Let's Talk Low Back Pain. This post is about the day-to-day stuff that quietly adds up.

Sitting for hours at a time

Office worker at a desk reaching for his sore lower back, a common everyday cause of low back pain

The single biggest contributor I see is prolonged sitting. When you sit for long stretches, your hip flexors shorten, your glutes switch off, and the discs and muscles of your lower back carry load in a position they aren't built to hold all day. Add a slouched posture and a screen that's too low, and you've got a recipe for a stiff, achy back by mid-afternoon.

The fix isn't a perfect chair. It's movement. Stand up and walk for a minute or two every 30 to 45 minutes, set a posture-check reminder, and spend some time strengthening the muscles of your low back, core, and hips to better tolerate working a desk job.

Lifting the wrong way

Person carrying a heavy cardboard box, a common way to strain the lower back

You don't have to lift something huge to tweak your back. You just have to lift it poorly. Bending from the waist with a rounded back puts a surprising amount of strain on the structures of your lumbar spine. Instead, hinge at your hips, keep the load close to your body, and let your legs do the work. This applies to the gym, but also to laundry baskets, kids, and grocery bags.

A core that's out of practice

Your core muscles are the support system for your spine. When we spend most of the day sedentary, those muscles get deconditioned, and a weak core means your low back picks up the slack. This is also why "weekend warriors" so often end up sore: a sudden burst of activity on Saturday asks a lot of muscles that sat still all week. That sudden increase in load without the capacity to tolerate it produces pain. Building up gradually and keeping a consistent baseline of movement protects your back far more than the occasional intense session.

How (and where) you sleep

A third of your life is spent in bed, but there's only so much you can control. I find myself telling patients all the time that sleeping on your back with a pillow under your knees, or on your side with a pillow between your knees is the best option. But I know for a fact that if I fell asleep like that I would wake up on my stomach an hour later. I encourage my patients to control what they can control: a supportive mattress, a pillow that is a comfortable height and firmness for your body, and a consistent bed time and nightly routine is a great way to direct your energy.

Stress you're quietly carrying

Stress isn't just in your head. When you're tense, the muscles around your spine tense too, and over time that low-grade guarding shows up as tightness and aching in the lower back. It's one of the most overlooked causes I see, and it's a good reminder that managing stress, sleep, and movement all feed into how your back feels.

So how do you fix everyday low back pain?

Two older adults stretching outdoors to keep their backs mobile and healthy

Because these causes build up gradually, the solutions are about consistency rather than quick fixes:

  • Move often. Frequent, gentle movement beats long periods of stillness every time.
  • Strengthen the support system. A stronger core and hips take pressure off your lower back.
  • Tidy up your setup. Small ergonomic tweaks at your desk and during lifting add up.
  • Get assessed. A proper exam can pinpoint which of these is driving your pain so the plan actually fits you.

In the clinic, I combine spinal adjustments to restore movement with targeted exercises so that motion sticks, the same approach that research supports for managing low back pain. If your pain radiates down your leg, that can point to something like sciatica, which is worth having looked at specifically.

When to have it checked

Most everyday low back pain settles with movement and a few habit changes. But if your pain lasts more than a couple of weeks, keeps coming back, radiates down your leg, or comes with numbness or weakness, it's time to get evaluated rather than guess.

At Tarry Chiropractic in Lenexa, I'll take the time to understand what's actually driving your back pain and build a plan to get you moving comfortably again. Give us a call at (913) 400-2014 or book online to get started on the path to a healthier, pain-free back.

Frequently asked questions

Why does my lower back hurt when I wake up?

Morning back pain often comes down to how you sleep. Stomach sleeping flattens your low back's natural curve, and an old or sagging mattress lets your spine settle into awkward positions for hours. Try sleeping on your side or back with a pillow for support, and if the ache lingers into the day, it's worth getting checked.

Why does my lower back hurt when I sit?

Prolonged sitting is one of the most common triggers I see. It shortens your hip flexors, switches off your glutes, and loads your lumbar spine in a position it isn't built to hold all day. Standing and moving for a minute or two every 30 to 45 minutes usually makes a real difference.

When should I worry about lower back pain?

Most everyday low back pain eases within a couple of weeks. Get it looked at sooner if the pain keeps coming back, radiates down your leg, or comes with numbness, weakness, or any change in bladder or bowel control.

Can a chiropractor help with lower back pain?

Yes. Spinal adjustments paired with targeted exercises are a well-supported way to manage low back pain. It starts with a thorough exam to pinpoint what's actually driving your pain so the plan fits you.

Ready to feel better?

Dr. Tarry will get to the bottom of what's driving your pain and build a plan to get you moving comfortably again. Book your visit in Lenexa today.

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or call (913) 400-2014