Better Heart Rate Method
A more accurate method for determining heart rates - by measuring the time it takes for 10 heart beats to occur. Includes printable chart.
* A web version of this ar ... (to access this download, please log in below.)
The resource you have requested is available only to current members.A more accurate method for determining heart rates - by measuring the time it takes for 10 heart beats to occur. Includes printable chart.
* A web version of this ar ... (to access this download, please log in below.)