If you laid out your blood vessels they would span the globe… twice! There is 100,000km (328,083,989 ft.) of them.
And if you gain 500gm (1 lb.) of fat your body grows an extra 11km (36,089 ft.) of blood vessels to maintain flow.
At any one time 20% of the blood in your body is in your head.
The right side of your heart is thicker and 6 times stronger than the left.
The female heart is on average smaller than the male heart.
Problems with our heart & blood vessels can lead to: