Our happy hour fact to amaze your drinking buddies with.

"Do-gooders" and those with malicious intentions experience a rush of physical strength when they contemplate being either good or evil, respectively.

In one experiment, Harvard researchers gave people a dollar bill and told them they could either keep the cash or give it to charity. They were then asked to hold a 5-lb. weight for as long as they could. Those who gave the money to charity outlasted those who pocketed it by an average of 10 seconds.

In a second experiment, volunteers, who held the weight in one hand, were asked to write a fictional story that involved them either helping, harming or having no impact on another person. The fictional helpers were able to hold the weight for longer than those whose stories did not involve aiding others.

There is a catch: The folks who wrote about themselves harming others became even stronger.

The concept, known as "moral transformation," is further proof that evil would always prevail if the bad guys just remembered to kill the good guys when they had the chance.