The Heartbeat Formula

The video explores the relationship between heart rate and lifespan in mammals, using elephants and shrews as examples. It explains that a mammal's lifespan can be predicted by dividing a constant by its heart rate. Despite their size differences, both elephants and shrews have hearts that beat approximately 1 billion times in their lifetimes. This shared trait is common among most wild mammals.

Describe the heart rate and lifespan relationship for elephants as mentioned in the text.

What does the text suggest about the total number of heartbeats for both elephants and shrews?