If you are cold you are more likely to be hungry because you use energy to keep warm.
144
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
One human hair can support 3 ounces.
191
The human brain doesn't stop developing until about 25 years old.
102
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
A human being loses an average of 40 to 100 strands of hair a day.
133