You can expect to reduce your resting heart rate by 10 bpm after a certyain length of running. So Calculate this way,
assuming your heart rate increase by 60 during one hour running session but hear rate decrease 10bmp throught out 24 jhours for teh whole day, then
The overal reduction of heart beat for one day is
24*60*10-60*60=10800. So your hear beat 10800 times
less in one day