The human cardiovascular system evolved as part of the physiology of [prehistoric] hunters, who ran for their lives.
![The human cardiovascular system evolved as part of the physiology of [prehistoric] Image](https://www.idlehearts.com/images/the-human-cardiovascular-system-evolved-as-part-of-the-physiology-of-prehistoric.jpg?x85372 "The human cardiovascular system evolved as part of the physiology of [prehistoric]")
The human cardiovascular system evolved as part of the physiology of [prehistoric]
The human cardiovascular system evolved as part of the physiology of [prehistoric] hunters, who ran for their lives.
