Yawns are more contagious among people with closer relationships.
163
Chewing gum boosts your brain power.
285
The human body contains over a billion miles of DNA.
147
Our Right Lungs takes more air than our left lung.
194
The human brain doesn't stop developing until about 25 years old.
102
Enamel is hardest substance in the human body.
61
If you are cold you are more likely to be hungry because you use energy to keep warm.
143