The video explains correct (abdominal) breathing and the correct positioning of the iPhone during a measurement with a chest strap (e.g. Polar H10). Phone upside down in the waistband with the display facing outwards. During the paced breathing sections let the phone move only from your belly. https://breathtuner.app/wp-content/uploads/2022/10/TwoBreathHrm.mp4
Videoinstructions – camera
The video explains correct (abdominal) breathing and correct positioning of the iPhone during a measurement with the camera. During the paced breathing sections let the phone move only from your belly. In the pauses in between, the finger may be taken off the camera. https://breathtuner.app/wp-content/uploads/2022/10/TwoBreathCam.mp4