Human thigh bones are stronger than concrete!
63
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
The human body contains over a billion miles of DNA.
147
The average person's skin weighs twice as much as their brain.
131
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
You're born with 300 bones, but when you get to be an adult, you only have 206!
17
The human sigh acts as a physiological reset button.
23