Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
You forget 90% of your dreams.
256
Your fingernails grow faster in summer.
744
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Babies crawl an average of 200m a day.
212
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
One human hair can support 3 ounces.
191