How Do You Calculate the Heart Rate Response to Arousal?

There's genes involved in determining the heart rate response to arousal. We did a study with that, in the twin study we did. We showed it was very reproducible from night to night, but it varied between people. So I don't think we should start throwing over the age out the door and get rid of all the great science we've done using the AHI and the epidemiology.We need to be thoughtful about what we're doing constructive and not just jumping around.