In the 2000s, it was all about the boobies. Women wanted bigger breasts and wore belly tops like Britney Spears to show them off. Now, the trend is the booty. People have become infatuated by the wonder that is the backside, and with squats, the booty has only gotten better.

I'm not a pop culture professional, but it seems like the booty trend started when the lovely Kardashians took to television.

They joked around about their large booties, which made women everywhere who share the same body type feel more comfortable with showing them off.

And then celebrities took to the scene with dramatized behinds. Nicki Minaj's booty makes Beyonce's look an everyday sighting.

And then all of a sudden, with celebrities and workout gurus focusing on behinds, everyone seemed to jump on the bandwagon. Going to the gym, for women, became a must and guys even started realizing that a woman with a big booty is more attractive than someone who doesn't exercise.

Going to the gym has become a place where guys and girls meet, go on dates and even just spend hours on hours perfecting themselves. The national sensation that is the booty, has literally rocked the world and create a "gym" movement behind it.

Squatting is hard work, but the results have become famous. The squat machines at the gym are always full, and when a woman uses one, the whole room glances over to get a look at the eighth wonder of the world: the booty!