research
7 min read

What 250+ Phone Camera Body Scans Revealed About How We Move

We built a browser-based movement analysis tool. After 250+ assessments, here's what the data shows — including compensation patterns most people don't notice.

E

Eren Demir

Founder, PREVIA Health

Can a phone camera detect movement patterns that people don't know they have? We built a browser-based tool to find out — and ran it on 250+ people.

The Setup

Four movement tests — shoulder raise, toe touch, overhead squat, leg raise — each designed to reveal a different pattern. A phone propped up at arm's length, AI tracking your body in real time, everything processed on your device. No app download, no data leaving your phone. About five minutes.

250+
assessments
61
avg. score
95%
had findings

What the Data Shows

Average score: 61 out of 100. Out of 250+ people, only 12 had no findings at all — 95% showed at least one measurable pattern. Most land in the Moderate range.

Score Distribution

Excellent(85+)
3%
Good(70–84)
31%
Moderate(50–69)
48%
Needs Work(<50)
18%

The most common findings, ranked by prevalence:

Top Findings

Forward torso lean (squat)76%
Arms not overhead (squat)74%
Cross-body compensation73%
Forward head posture64%
Hip compensation (leg raise)58%
Knee valgus (squat)47%
Leg asymmetry L/R41%

64% show forward head posture — the neck drifting forward instead of staying stacked over the spine. If you work at a desk, there's a good chance you have it and don't know. The overhead squat turned out to be the most revealing test: three out of four people can't do it without compensating. Most thought their form was fine.

Your Body Is Probably Cheating

One user raised his leg to 80 degrees. That looks good. But when we looked at the full picture, his torso was leaning 27 degrees to the side to make it happen.

His actual hip mobility: 53 degrees. His body had been working around a significant restriction — probably for years. He had no idea.

Apparent vs. Real Mobility

Measured (apparent)80°
Compensation (torso lean)-27°
Real hip mobility53°

The raw measurement tells one story. The compensation data tells another.

This isn't an outlier. 73% of our assessments show the same thing — the body compensating to reach a range it can't actually achieve cleanly. What looks like "good mobility" is often the body finding a workaround.

Think of it like Oura's "time in bed" vs. "actual sleep." The raw number looks fine. The compensation-corrected number tells a different story.

You're Probably Moving Older Than You Are

From the overall score and compensation data, we calculate a "Movement Age" — how old your body moves compared to your actual age. The average person in our dataset moves 6 years older than they are. A 28-year-old moving like a 34-year-old. Only 8% scored at or below their real age.

What Surprised Us

We expected flexibility to be the main issue. It wasn't — compensation was. People can move far enough. Their bodies just cheat to get there.

One user with 30 years of chronic back pain ran the assessment. We flagged exactly what his physiotherapist had independently found: his right hip. He wrote us afterward — "First time something digital actually matched what my physio told me."

Another user took his results to his osteopath. The osteopath confirmed the same patterns — the asymmetry, the compensation side, the restricted hip — without having seen our report. That was the moment we knew this works.


The assessment is free, takes five minutes, and runs in any mobile browser.

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E

Eren Demir

Founder, PREVIA Health