Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Human hair and fingernails continue to grow after death.
7
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
Enamel is hardest substance in the human body.
61
Yawns are more contagious among people with closer relationships.
163