Researchers from the University of Florida crunched the numbers on roughly 25,000 workers from the United States and found that, for women, it pays to be thin.

Women who weigh 25 pounds below average earn an extra $15,572 dollars a year -- and women who weigh 25 pounds more earn $13,487 less than a woman of normal weight.

Guys have the exact opposite situation at work. Men who weigh 25 pounds below the group norm earn $8,437 dollars a year less than a man of average weight. In fact, a man's salary increases consistently as he packs on the pounds, until he tips the scales at an almost-obese 207.