Not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
12
Couples' personalities converge over time to make partners more and more similar.
235
One in five long-term love relationships began with one or both partners being involved with others.
177
The hands of the clock on the back of the $100 bill are set at approximately 4:10.
72
The New York Stock Exchange started as a coffee shop!
99
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
An ounce of platinum can be stretched 10,000 feet.
40
There are more nerve cells in the human brain than there are stars in the Milky Way.
349