Amazing Facts about your Blood Vessels!
60,000 miles - that’s nearly two and a half times around the Earth! Here are 6 other amazing facts about blood vessels: 1. They carry a million barrels of blood in a lifetime - that’s about 1,800 gallons of blood every day. 2. Blood vessels act as a force field for the brain - the blood-brain barrier, which keeps harmful substances from reaching the brain. 3. Blood vessels are affected by the weather - they expand to release heat, allowing you to cool down, and narrow or constrict to conserve heat. Another consequence of extreme exposure is frostbite, which can happen after just a few minutes in freezing conditions. 4. Blame that ice cream “brain-freeze” on your blood vessels - when something cold touches the warm roof of your mouth, blood vessels constrict to minimise heat loss, then relax to restore blood flow. This triggers the familiar burst of pain. 5. Your blood vessels might get a boost from chocolate - eating moderate amounts of chocolate may keep your heart and blo