Some facts about heart ::
┗▶ Your heart muscles pump so hard that even at rest the muscles of your heart work twice as hard as the leg of a person sprinting.
┗▶ Scientists have discovered that the longer the ring finger is in boys the less chance they have of having a heart attack.
┗▶ The right lung of a human is larger than the left one. This is because of the space and placement of the heart.
┗▶ A shrimp's heart is in its head.
┗▶ Jellyfish, sponges and coral have no heart and no brain.
┗▶ The earthworm (Lumbricus terrestris) has five pairs of hearts. They aren't actually hearts, and biologists don't really call them hearts. They're more like blood vessels that can contract. But books often say that earthworms have 5 pairs of hearts.
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