Ingrown toenails are hereditary.
15
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Kissing an infection-free partner is good for your teeth!
141
Dating back to the 1600's, thermometers were filled with Brandy instead of mercury.
16
The tongue is the strongest muscle in the human body.
50
Your heart will pump about 212 million liters in its lifetime.
26
The human brain is more active during sleep than during the day.
28
One out of 20 people have an extra rib.
66