A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Yawns are more contagious among people with closer relationships.
163
Our Right Lungs takes more air than our left lung.
194
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Your fingernails grow faster in summer.
744
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
It takes approximately 12 hours for food to entirely digest.
93