You've heard all about natural selection in science class, but how much do you know about sexual selection? It's when one gender consistently prefers the other gender with specific traits so individuals with those genes spread them more often and transfer the traits throughout a population.

Basically, we've evolved to like some traits more than others. That's why men tend to like women with certain waist-to-hip ratios. What else has nature conditioned them to like? Well, you can watch the video down below to find out:

Do you have anything else to add to this interesting video about attraction?