Our happy hour fact to amaze your drinking buddy with.

Women who live with a partner put on more pounds than those who fly solo.

Australian researchers chose 6,000 women between 18 and 23 years old and followed them for 10 years, monitoring their weight fluctuations over that time period. Here's what they found: a 140-lb. woman who had a baby during that period gained, on average, 20 lbs.; one who lived with a husband or boyfriend, but had no children, gained 15; and one who lived alone gained 11 by the time she was in their late 20s/early 30s.

While any weight gain after childbirth could be attributed to lingering metabolic changes, the discrepancy between women who cohabitate with men and women who live alone would have to be due to behavior.

Which leads us to believe that owning multiple cats somehow makes a woman eat less.