Celebrity couple Shahid Kapoor and Mira Kapoor nailed the viral Internet video trend `Gravity Challenge` on Sunday. After the Ice Bucket and Mannequin Challenge, here came another video trend that is going viral on social media.

The #GravityChallenge is spreading like wildfire on social media with more and more couples joining in to complete the challenge. The challenge comes as a battle between men and women upon who is stronger. Many couples have been trying this and on a larger scale, where most women are able to beat them in this challenge. But, the case with Bollywood`sSasha` is not similar.