When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Ernest Hemingway survived through anthrax, malaria, pneumonia, dysentery, skin cancer, hepatitis, anemia, diabetes, high blood pressure, two plane crashes, a ruptured kidney, a ruptured spleen, a ruptured liver, a crushed vertebra, a fractured skull, and more.
67
Poor eyesight (myopia) is associated with higher IQ.
232
Enamel is hardest substance in the human body.
61
There is a disease called ichthyosis that turns the skin scaly like a fish.
90
The human body contains over a billion miles of DNA.
147

