- The smallest bone in the body is the stapes bone, which is located in the ear.
- The human body uses 200 muscles just to take a single step forward.
- Alcohol won't kill your brain cells. It does damage the connections between them that have short- and long-term effects. A couple of happy hours every month won't damage your brain.
- The air you breathe in a train station is 15% human skin.
- A heartbeat can change based on the music a person is listening to.
- There are more than 100,000 miles of blood vessels in your body.
- Your gastrointestinal system that includes your stomach, small intestines, and colon, has a sophisticated enough nervous system that it's sometimes called the second brain.
- 70% of children diagnosed with ADHD experience severe sleeping problems.
- Studies show that your facial and body temperature increases during sexual arousal, which explains why your face and chest might get a little red when you're having sex.
- It is impossible to tickle yourself.
- When a woman is pregnant her senses are all heightened.
- Humans are born with 300 bones, but as adults they only have 206 bones. This is because many smaller bones join together to make a single bone.
- Each human foot has over 125,000 sweat glands.
- The length of the human esophagus is 25 centimeters.
- The lifespan of an eyelash is approximately 150 days.
- Studies have shown that listening to music is good for digestion.
- A woman has approximately 4.5 liters of blood in her body, while men have 5.6 liters.
- You have taste receptors in the stomach, intestines, pancreas, lungs, anus, testicles and the brain.
- Arthritis causes joints to make sounds due to the loss of smooth cartilage and the newly formed roughness of joint surfaces.
- A block of human bone the size of a matchbox can support up to 18,000 pounds of weight.