How to calculate your body age<br>Find your resting pulse rate. The heart is one of the body's most important organs, and a well conditioned and healthy heart is a big part of overall well-being. A normal heart usually beats at between 60-100 times per minute.
There is a significant range of healthy pulses
60-100 allows for a significant range
( z1 range :ARG1 ( z2 pulse :mod ( z3 healthy ) ) :ARG1-of ( z4 significant ) )