When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Every human spent about half an hour as a single cell.
144
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Enamel is hardest substance in the human body.
61
Human hair and fingernails continue to grow after death.
7
Obsessive nose picking is called Rhinotillexomania.
101
Your heart will pump about 212 million liters in its lifetime.
26
A human being loses an average of 40 to 100 strands of hair a day.
133