RizunResilience BF%
Two ways of measuring the same body, side by side, with the gap between them worked out automatically. They will not agree, and that is the whole point.
1 Your photograph
This photo never leaves your phone. It is opened by this page, shown to you, and forgotten the moment you close or reload it. Nothing is uploaded, nothing is stored, nobody — including Trevor — ever receives it.
Make it repeatable
- Relaxed, not flexed. Arms slightly away from the body, breathing normally.
- Same light every time. Directly overhead light invents abdominal definition; a window does not.
- Same time of day, before eating, and before training.
- Same distance and same phone height — chest height, a couple of metres back.
- Front on. A side view is worth taking too, and tells you more about the waist than the front does.
The camera runs in this page only. Nothing is recorded and nothing is sent anywhere — the picture exists in this tab until you close it.
2 Read the photo
Pick the drawing that matches what you see and press the button. That is all you have to do — the three questions underneath are optional and only narrow the answer. These are outlines, not photographs of real people, so nobody here is a yardstick for anybody. Judge yourself relaxed — tensing changes the answer and makes the next comparison worthless.
One drawing is enough. The three questions are optional and only tighten it.
3 Now the tape
The same measurements as the Navy tape test — that page has the full instructions and the history. Measure at the end of a normal breath out.
Or press Enter in any box.
4 The difference
Why they disagree, and why that matters more than either number
Two methods measured the same body on the same day and returned two different answers.Neither of them is lying and neither of them is the truth. The tape is reading circumferences through a 1984 equation. The photo is reading what you can see. They are measuring different things and they were built from different people.
A scanner would give you a third number. An InBody in the morning and the same InBody after lunch will give you two more. Every method sits on its own scale, and moving between them tells you nothing at all.
So the number is not the measurement. The change in the number, taken the same way every time, is the measurement.
Pick one of these and stay with it. Same method, same tape, same light, same time of day, same person judging. Then a two-point move over eight weeks means something, because everything that could have caused it except your body has been held still. Mix the two and a two-point move means nothing, because you cannot tell your body from your method.
One known bias worth knowing before you argue with the result: when people rate themselves by eye, roughly half come in under their measured figure, by about two and a half points on average. If your photo number is the lower of the two, that is the direction the research expects, not evidence the tape is wrong.