Yawns are more contagious among people with closer relationships.
163
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Our Right Lungs takes more air than our left lung.
194
Every year your body replaces 98% of your atoms.
119