The average human will yawn around 250,000 times over the course of his life.
Human life expectancy has increased more in the last 50 years than in the previous 200,000 years of human existence.
There are more lifeforms living on your skin than there are people on the planet.
An average person in the U.S. eats 35 tons of food in a lifetime.
In an average lifetime human skin completely replaces itself 900 times.
An average person produces about 25,000 quarts of saliva in a lifetime, enough to fill two swimming pools.
The average person takes 183,755,600 steps in a lifetime.
Men spend almost a year of their lives staring at women, a survey found.
80% of humanity lives on less than US$10 per day.
The average American spends over 5 months of his life on the phone.
People with many friends live 3.7 years more than those who are isolated.
Sitting for more than three hours a day can cut two years off a person's life expectancy.
Women live longer than men partly because their immune systems age more slowly.
In his lifetime, a man spends almost six months shaving.
