Measure in case of infection / disease

There is no risk in measuring during infection/disease but in some cases we advise against it.

This is especially true if you have a heart condition and/or pacemaker, which affects HRV in a way that can make the readings very difficult to interpret.

Other medical conditions can also affect HRV and sometimes make the readings difficult to interpret, such as respiratory disease or diabetes. However, you can often get a lot out of taking a stress check even if you have such conditions.

If you have an infection in your body and perhaps a fever, your HRV will drop. So always wait at least two days after the symptoms have disappeared before starting a stress check, to get accurate readings.