Human Body Facts for Kids
Surprising facts about your body
Goosebumps are a reflex inherited from our furry ancestors — in hairy animals, raised hair traps warm air and makes the animal look bigger to predators.
Coughing is a reflex that forcefully expels air from your lungs to clear the airways of mucus, irritants, or foreign objects.
The cerebellum at the back of your brain coordinates your movement and balance — it contains about half of all the neurons in the brain despite being small.
Collagen is the most abundant protein in the human body, making up about one third of all your proteins and providing structure to skin, bones, and tendons.
Each human foot contains 26 bones, 33 joints, and more than 100 muscles, tendons, and ligaments — making it an incredibly complex structure.
Humans actually emit a very faint glow of light — known as bioluminescence — but it is about 1,000 times too dim for the human eye to detect.
Research suggests humans can actually detect chemicals in other people's sweat that signal fear or anxiety, influencing our own emotions and behaviour.
Tendons are tough fibrous cords that connect muscles to bones, transmitting the force of muscle contraction so that you can move your skeleton.
Your entire digestive system — from mouth to the end of the large intestine — is about nine metres long in a living adult.
Most of the cells in your body are replaced over time — for example, your skeleton is almost completely renewed approximately every ten years.