In a ABC News blog column, they give a scientific explanation on twerking. Michelle Olson, a professor of exercise science and a certified strength and conditioning coach at Auburn University in Montgomery, Ala., explains the phenomena. “You take a wide stance with your legs turned out at 10 and 2 so your hips are externally rotated,” she said. “Then you pulse up and down as you thrust the pelvis bone forward and back.” Miley Cyrus has gone on to become the poster child of "Twerk" and is setting the popularity of the dance to new heights especially after her jaw-dropping performance at the MTV's Video Music Awards.

[via ABC News]