The world as a whole seems to get bigger and bigger, and people in Japan are no exception. Well, half of them are anyway. The male half.

That's right -- studies are showing that as men in Japan get heavier and become closer to obesity, the women of Japan are staying slim and even getting slimmer on average as the years go by. In the past few decade, women on average have lost 2 kg (4.4 lb), while men have gained 4 kg (8.8 lb.)

The reason behind these changes? Women are becoming more aware of the benefits of exercise, while men are working longer hours and socializing for work more.