1. In the paper from Jakub Parak, Ilkka Korhonen Department of Signal Processing Tampere University of Technology Tampere, Finland in which the Firstbeat Bodyguard has been tested against a standard clinical ECG device, there where tests at rest: https://assets.firstbeat.com/firstbeat/uploads/2015/10/white_paper_bodyguard2_final.pdf 2. There where no tests at rest in the paper in which the group of Dr. …