If you're using Spooky Pulse for scanning, it really is important to be as still and relaxed as possible in order to get an accurate result. Reading or watching TV may cause the heart rate to jump and that can impact on the scan.
However, if you're using GX for scanning, you can certainly read or watch TV. That said, the GX scan is only 12 minutes so I find it's a great time to close my eyes and take a little time out.
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