The PopWhat that sound is, and who pays for it when you work for yourself

Independent producing is a profession in roughly the way that being between relationships is a relationship status. You are technically in it. You can describe it at parties. But for long stretches nothing is happening, and you are mostly waiting for a phone call from someone who has promised to call.

So producers between films become, briefly, other people. We consult. We read scripts for friends who swear this draft is the one. We take jobs that have nothing to do with movies and explain them to our families as research. Every independent producer I know has a list of past jobs that reads like a stack of unrelated library books, and every one of them can tell you which job taught them the most about making a film. The answer is almost never the one you'd guess.

Somewhere along the way I picked up a phrase I've never been able to shake: “Odd jobs are for writers. Eighty-five percent of writing is living.” I don't know who said it first. I know I've repeated it to myself in parking lots more times than I'd like to count, usually while sitting in a car that was also functioning as an office.

My time working in health care began in a chiropractor's office. I went in thinking of it as a gap between assignments. I came out understanding that I had spent my entire adult life with no idea what was going on inside my own spine.

I'm tall. People assume this is an advantage until they watch me use an airplane bathroom. The world was designed by and for people of average height, and those of us outside the curve pay a small tax every day: desks too low, car roofs too close, showerheads aimed at our sternums, and every photo taken with me slightly hunched so everyone else fits in the frame.

For years my back and neck hurt in the low, steady way you stop noticing, like a refrigerator hum. I didn't treat it. I didn't even classify it as a problem. It was just what having a body felt like.

Then I spent time around chiropractors and learned what an adjustment actually is. I had always pictured something between a massage and a bar fight. What I saw was precise: a clinician finding the joint that wasn't moving the way it should and moving it, quickly, in one direction. The first time someone did it to me, I heard a sound like bubble wrap and felt about an inch taller, which is the last thing I need and somehow exactly what I needed.

The pop is gas. Your spinal joints, like your knuckles, sit inside a capsule filled with synovial fluid, a lubricant with gases dissolved in it. When a joint is separated quickly, the pressure inside the capsule drops, and a gas cavity forms in the fluid. That process is called cavitation, and the forming of the cavity makes the sound.^[1]

For decades, scientists argued about whether the noise came from a bubble forming or a bubble collapsing. In 2015, a team led by Gregory Kawchuk at the University of Alberta put a person's finger inside an MRI machine, pulled it until the knuckle cracked and filmed the joint in real time. The images showed a cavity appearing at the moment of the crack. They concluded the sound comes from the cavity forming, not a bubble bursting.^[1] So the next time someone at work cracks their knuckles in a meeting, you can tell them, accurately, that they are performing a small fluid dynamics experiment on company time.

What the pop is not is a bone sliding back into place. Your vertebrae were not out of place. The sound is a side effect of a joint moving quickly, and clinicians will tell you an adjustment can work without it.

Mostly, the fear is overblown. The best-known evidence comes from Donald Unger, a physician who cracked the knuckles of his left hand, and never his right, every day for more than 60 years. He found no arthritis in either hand and won the 2009 Ig Nobel Prize in medicine for the effort.^[2] One man is not a clinical trial, but very few clinical trials have shown that much commitment.

Your back is not your knuckles, though. Twisting hard in a chair until something gives is different from a trained person moving one specific joint. If cracking your back is the only thing that relieves a pain, the pain is the thing worth looking at. And if a crack ever comes with sharp pain, numbness or tingling, stop and see a clinician.

An adult head weighs about 10 to 12 pounds. In 2014, the spine surgeon Kenneth Hansraj modeled what happens when you tilt it forward. At 15 degrees, the force on your cervical spine rises to about 27 pounds. At 60 degrees, the angle most of us hold while reading a phone, it's about 60 pounds.^[3] That's roughly a second-grader sitting on your neck, for hours a day, while you read about other people's vacations.

The industry name for this is text neck, which sounds made up because it was, but the posture is real. Walk through any airport and you will see a few hundred people bowing toward their phones like the screens are small, demanding gods.

The fix is unglamorous. Lift the phone instead of lowering your head. Pull your chin straight back a few times an hour. Roll your shoulders down and away from your ears. Stand up. Almost everyone knows this, and almost no one does it, because stretching has the worst marketing of any health habit in America. It costs nothing, needs no app and produces no content, which in 2026 may be the same as not existing.

This is the part I didn't expect. Spending time around people in pain, I started to notice that the way they held their bodies and the way they held their moods seemed to travel together. Hunched people seemed to be having hunched days.

There's some research behind that hunch. In a 2017 study at the University of Auckland, 61 people with mild to moderate depressive symptoms were taped into either their usual slouch or an upright posture and then asked to give a stressful speech. The upright group reported more energy and less fatigue, spoke more words and used fewer first-person pronouns like “I” and “me,” which researchers treat as a marker of self-focus.^[4] The authors called it preliminary, and a small study shouldn't be oversold. But the direction is interesting. Standing up straighter appeared to pull people slightly out of their own heads.

I think about that a lot. Most of us treat the body as the vehicle and the mind as the driver. The longer I spent watching people walk into a waiting room, the more it looked like a two-way street. You can't think your way out of everything. Sometimes you have to stand your way out first.

Here is where the odd-jobs life and the chiropractor's table meet. If you're a freelancer, a 1099 contractor or a film worker between shows, nobody hands you a benefits packet. The adjustment is the same price as everyone else's. The difference is who pays for it.

Two practical notes. First, ask any clinic for its cash rate before your first visit. Many offices have a self-pay price lower than what they bill insurers, and they won't always offer it unless you ask. Second, a flexible spending account usually comes through an employer, so most independent contractors don't have one. The HSA is the account that travels with you.

That last point is the whole story of contract work in miniature. The employee's benefits are attached to the job. The freelancer's benefits are attached to the freelancer, which means you have to build them yourself, usually between gigs, often in a parking lot. If you're a producer wondering where you fit, start with Do Film Producers Get Health Insurance?