Every human spent about half an hour as a single cell.
144
The human brain doesn't stop developing until about 25 years old.
102
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Obsessive nose picking is called Rhinotillexomania.
101
Only humans shed emotional tears.
331
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13