Mice, whales, dogs, cats...they all get around a billion beats. But why? And what about humans? Animals (and their hearts) come in all shapes and sizes but a cosmic force appears to unite them, giving the tiny elephant shrew as many heartbeats as the giant elephant. This is what's really going on. And can understanding the process lead to ways to hack your life expectancy? Does cold make you live longer? - Dr Rohin Francis Big thanks to my work buddies and fellow cardiologist-scientists Ven, Ali and Mo for supplying me with tiny hearts and videos. ------------ More Medlife Crisis: http://www.medlifecrisis.co.uk/ https://twitter.com/medcrisis https://www.facebook.com/Medlifecrisis https://www.instagram.com/medcrisis ------------ Music: Tango de Manzana by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/). Downloaded from https://incompetech.com/music/royalty-free/index.html?collection=15 We Wish You a Merry Christmas by Twin Musicom is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/) Artist: http://www.twinmusicom.org/