Your thumb is about the same size as your nose.
124
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
Our Right Lungs takes more air than our left lung.
194
There are about 1,400 different species of bacteria in your belly button.
10
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99