Our happy hour fact to amaze your drinking buddies with. .

There is evidence to suggest that those with high I.Q.s stay up later and sleep later.

Researchers from the London School of Economics have found that people with high I.Q.s are more likely to be night owls, whereas folks with lower I.Q.s are more likely to wake up early and function their best during the day. Other studies have found a link between "eveningness" and getting good grades in school.

However, all is not well with those who burn the midnight oil. People who are disposed to staying up late are less reliable and more likely to suffer from depression and various addictions when compared to early risers.

So maybe the old adage should just be early to bed, early to rise, makes a man healthy.