In order to get the most accurate results, please observe the following precautions:
- For accurate measurement of your BMI, make sure that you entered accurate personal information (height, age, gender) when creating your iHealth account. You can check/edit your personal information in MENU > Edit Profile.
- Place the scale on a flat, sturdy surface (do not put it on a carpet).
- Take measurements at the same time of day and under similar conditions.
- Stay still until the measurement is completed.
*credit to Sylvain of iHealth Labs EU
https://helpcenter.ihealthlabs.eu/hc/en-gb/articles/360000007465-iHealth-Lite-HS4S-Precautions-for-use