· Structurally, fingernails are modified hairs – they can show a lot about your blood circulation, vitamin deficiencies and other health issues.
· You can’t get a tan on your palm or on the underside of the fingers
· Each hand contains 29 major and minor bones, 29 joints, 123 ligaments, 34 muscles, 48 nerves and 30 arteries
·Humans are actually NOT the only creatures to have opposable thumbs – chimpanzees and monkeys have them as well and a koala bear has two! thumbs on each hand. What makes us unique is the ability to rotate small and ring fingers toward the thumb.
Our hands take up about a quarter of the brain’s motor cortex
(which controls all body movement)
· The vein on your ring finger is called Venna Amoris—it has a direct line with the human heart and is known as the vein of love. That’s why we wear an engagement ring on the left hand’s finger.