My watch has an electrocardiogram (EKG) function, and it immediately said I was in atrial fibrillation at a rate of 100-130 bpm. I went to the emergency room where they confirmed AFib, did a bunch ...

Seeing a loved one pass out with their eyes rolled back is a terrifying thing to experience. That minute or two you live through between dialing 911 and trying to see if that person wakes can feel ...