Don't Do THIS!

Closing guard can be a great strategy in Jiujitsu, Mma or even in a street fights,
but doing it in the air is a HUGE mistake.
I remember when the Brazilian Jiujitsu was getting into the big stage, they were rules against pulling guard in the air , because the science behind is if you do this in a street fight or Mma fights you'll be slammed against the floor and consequentially knockout .