The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Your heart will pump about 212 million liters in its lifetime.
26
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
Your fingernails grow faster in summer.
744
Pain occurs when sounds are above 130 db.
124
Yawns are more contagious among people with closer relationships.
163