You Are Not So Smart: Why You Have Too Many Friends on Facebook, Why Your Memory Is Mostly Fiction, and 46 Other Ways You're Deluding Yourself

by David McRaney

In many studies around the world, no matter what cultural significance is placed on body type, a ratio in which the waist is about 70 percent the width of the hips is always preferred. According to Buss, a hip-to-waist ratio of .67 to .80 correlates to health, reproductive and otherwise.