There are about 1,400 different species of bacteria in your belly button.
10
Within three days of death, the enzymes that once digested your food begin to eat you.
22
Your thumb is about the same size as your nose.
124
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The human sigh acts as a physiological reset button.
23
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The human brain doesn't stop developing until about 25 years old.
102