Enamel is hardest substance in the human body.
61
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The human brain has the capacity to store everything that you experience.
4k
The human body contains over a billion miles of DNA.
147
Your thumb is about the same size as your nose.
124
The human sigh acts as a physiological reset button.
23