trying to make your heart skip a beat

The heart rate of a blue-throated humming bird is 1260 beats per minute. While this one has green on its chest, not blue, I am sure its heart beats fast.

It is said that all animals have generally the same number of heartbeats in their lifetimes. While this is not exactly true, the human and the chicken each have about 2 billion heartbeats in a life of average longevity.

I have heart murmurs.