You’re made up of a trillion cells, each with specialized functions, all working in harmony. Your brain alone has 86 billion neurons, each connecting to thousands of others. This is more complex than the internet system of the world.

Your femur (thigh bone) is stronger than concrete, capable of withstanding incredible forces.

You shed about 30,000 to 40,000 dead skin cells every minute, which equals about 9 pounds of skin cells annually!

Your heart beats about 100,000 times a day, pumping around 7,500 liters of blood. Over a lifetime, that’s over 2.5 billion beats!

Your brain uses 20% of your body’s energy, even though it’s only 2% of your body weight. It can store an estimated 2.5 petabytes (1 million gigabytes) of data!

While you sleep, the cartilage between your vertebrae expands because it’s not under pressure from standing. As the day goes on, you slightly shrink back to your normal height.

While you rest, your brain is busy processing information, consolidating memories, and even problem-solving!

That’s a lot of work for an organ about the size of your fist!

Don’t worry, most of these bacteria are beneficial and help keep you healthy!

Luckily, your stomach lining is constantly renewing itself to protect you. Had not been so, the fate of your stomach will be the same as a piece of meat that enters into your body.

This huge surface area allows for efficient oxygen and carbon dioxide exchange.

Every day, billions of cells in your body die and are replaced by new ones.