I have never heard this....have you
I was bouncing around internet and found something I have not heard ...has anyone else ? Do you do this ?
Always Wear a Heart Monitor
Pacemakers and ICDs typically have a rate cutoff, and you want to avoid getting too close to this upper limit. A heart monitor can help you monitor your pulse and to modulate your workout accordingly. Typically, you want to maintain at least a 10 perfect margin between your exercise heart rate and the cutoff limit. If your heart rate accelerates too quickly, tone down your workout and breathe deeply to lower your heart rate to a safe level before resuming your exercise.