The bone mass measured by body fat scale decreased from 2.8kg to 0.28kg in one day. Is the scale broken?

It must be broken. You can restart it and try again tomorrow. If not, please replace the battery. I don't know, I don't think so. You can test it several times to see if it is close, and test it several times to see if it is not good. Not once. You can test it once in the morning, once at noon, once at night, or several times at the same time to see if there is any change. If there is a big change, it means it is broken. If there is no change, you may not be sure. See if everything is different in the back. If it is not the same, it is not allowed, broken. I don't think any domestic use should be allowed. It may be broken. Repeat the test several times to see what happens. Still like this, it's probably broken. It may be broken. Repeat the test several times to see what happens. Still like this, it's probably broken. It may be broken. Repeat the test several times to see what happens. Still like this, it's probably broken.