Yawns are more contagious among people with closer relationships.
163
Your thumb is about the same size as your nose.
124
The average person's skin weighs twice as much as their brain.
131
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Our Right Lungs takes more air than our left lung.
194
Enamel is hardest substance in the human body.
61