• Hydrate well the day before 

• Avoid caffeine on the day of the scan 

• Avoid eating 3-4 hours before the scan 

• Avoid exercising 6-12 hours before the scan 

• Avoid wearing jewelry 

• Avoid wearing clothing that covers your feet and hands 

• Go barefoot 

An InBody scan uses bioelectrical impedance analysis (BIA) to measure body composition by sending multiple low-level electrical currents through the body while you stand on the scanner: 

1. Electrodes: Sensor electrodes touch different parts of your body. 

2. Electrical currents: The scanner sends multiple electrical currents through your body at different frequencies. 

3. Impedance readings: The scanner takes up to six impedance readings for each limb and the trunk. 

4. Data analysis: A computer analyzes the data to create a report of your body composition.

InBody scans are generally considered to be highly accurate, with a margin of error of around 2–3%. They are a popular choice for fitness enthusiasts and health professionals because they provide a more detailed picture of body composition than other methods like skinfold measurements or basic scales.