For more than a century, textbooks and science websites have repeated a striking claim: the blood vessels inside a single ...
Leaf through a textbook, watch a wellness influencer, or listen in at the gym, and it can feel as though the human body has already been mapped to exhaustion. Every muscle named, every nerve traced.
Every adult carries a hidden network of arteries, veins, and capillaries so vast that, if stretched into a single line, it ...