If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
On average a woman has 4 sexual partners in her lifetime.
-143
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Yawns are more contagious among people with closer relationships.
163
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127