The thing I found most surprising about this article was during the accident and subsequent setting in on shock, the authors heart rate didn't really increase by that much. I would have expected the heart rate to hit much higher numbers, the shock of being in an accident and the rush of adrenaline kicking in (causing the heart to beat faster). Glad to read that everyone was okay though. I am interested in knowing why the other car swerved in the first place? Was it an accident or were they distracted? The kind of metrics Apple Watch will never be able to tell us.