Several years ago I was having Afib and bouts of Atrial Tachycardia so I purchased an Apple Watch. With the Apple Watch I could get HR, EKG and send it to my doc, plus I could track the duration of the episodes and start/stop times. That DATA was recorded in my iPhone Health App.
I always knew when I was having an episode, but the data the Apple Watch provided help in finding triggers and that my episodes generally began around 6pm and averaged 12 hours in duration. Anything with caffeine in it was a trigger, as was heat and humidity.
If you're a hypochondriac, a smart watch might not be a good idea
