[AnimalMuppet]

> FYI I'm in my 40's.

Bad news: Age is a risk factor for AFIB. The older you get, the more likely it is to happen.

[proee]

Also a significant increase in AFIB risk for runners. I am doing around 10-20MPW over the last 5 years. Not sure if this is enough training load, but I've had a habit of pushing too hard on my runs as well.