How Does That Bed of Nails Really Feel?

The Breakdown looks at the physics of a remarkable feat

Is this a death-defying demonstration requiring a level of mastery only arrived at after years of intensive martial arts training, or is it a theatrical display based more on physics than on chi?

In order to answer that question, just take a look at the second video. Those guys haven't spent years in the dojo as far as we know, but they do know a little bit about fundamental principles of physics.