Yawns are more contagious among people with closer relationships.
163
The human brain has the capacity to store everything that you experience.
4k
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
The human body contains over a billion miles of DNA.
147
When you take a step, you are using up to 200 muscles.
886