The stomach’s lining regenerates every 3 to 4 days to prevent it from digesting itself with its own acid.

Pound for pound, human bones are stronger than steel—a cubic inch of bone can support up to 8,600 kg (19,000 lbs)!

The human brain produces enough electrical energy (about 12-25 watts) to power a small light bulb while awake.

Your body contains about 40 trillion bacteria, which is more than the number of human cells in your body!

In one year, your heart beats around 35 million times, and in a lifetime, it beats over 3 billion times!

The liver is the only organ in the body that can completely regenerate even if three-quarters of it is removed.

Humans actually emit a faint glow, but it’s 1,000 times weaker than the human eye can detect.

The small intestine is about 6 meters (20 feet) long, which means it’s about four times your height!

Just like fingerprints, no two people have the same tongue print—it’s completely unique to you!