Human teeth are almost as hard as rocks!
47
By the age of 60, most people have lost 50% of their taste buds.
17
Your heart rate can rise as much as 30% during a yawn.
69
You see your nose at all times, your brain just chooses to ignore it.
30
The average human body contains enough iron to make a small nail.
50
People who sleep late have more mental stamina and can outperform early risers.
33
The human brain is insensitive to pain.
76