Human teeth are almost as hard as rocks!
47
A woman's sense of smell is most sensitive during ovulation.
34
It is possible to go blind from smoking too heavily.
50
Only 1 person in 2 billion will live to be 116.
49
Pain occurs when sounds are above 130 db.
124
Laughing could dramatically improve your health – and be as good for you as a deep state of meditation, researchers have found.
28
When a person dies, hearing is usually the last sense to go.
124
