If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
A human being loses an average of 40 to 100 strands of hair a day.
133
If your DNA was stretched out it would reach to the moon 6,000 times.
256
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
One human hair can support 3 ounces.
191