This magic trick works on the principles of human anatomy. It may sound dangerous to you, and it is dangerous. It requires a highly professional person even to try to do this trick.
DOWN THE HATCH
Never try to attempt this trick because you may permanently hurt yourself.
The magic trick uses the knowledge of how your mouth and esophagus meet and your skills to flex your internal muscles to prevent the swords from falling inside the stomach.
It is no doubt the most dangerous trick ever shown.