Measuring heart beats

Mommy measured our heart beats on our wrist after being in the garden playing:
Eden - 88 beats per minute
Niamh - 88 beats per minute
Jude - 94 beats per minute

We then ran around the garden to get our hearts beating faster, and mommy took our heart beats again, unfortunately she could not find Eden and Judes, so after exercise:
Niamh - 124 beats per minute.