I'm sure you all already know this but I discovered this recently.
My cardiologist sent me to cardiac rehab because I have afib and some wall weakening in the heart. The idea is to strengthen the heart muscle to be able to handle any arrhythmia that may come my way.
I always thought that talk about exercise and high blood pressure and such was flooey sent out to get us all to buy gym memberships or something but since I've been doing this I've noted marked improvements in blood pressure, weight loss, in my ability to walk for sustained periods of time, and sleeping better!
So it wasn't flooey.
I do this workout three times per week:
20 minutes on the treadmill at 3.0 elevation and 2.0 speed.
10 minutes on the recumbent bike at resistance level 4
and 10 minutes on the NuStep at resistance level 4 also.
And on the in-between days, I do a 1/2 hour walk with my doggie.
Out of curiosity though, what does everyone else do for exercise with afib?