Your palms might get sweaty watching this.

Balls of steel.

Wonder if this guy just got done smoking some meth, because that dude is amped up and nuts!!!

You can't find a safer place to exercise?

From day to night in seconds...This is what it's like to plunge into darkness.

He don't have much time left on this earth...

This video, courtesy of Backyard Brains, shows what happens when Cypress Hill's "Insane in the Membrane" is played through a Woods Hole squid. The squid's chromatophores, which control pigmentation in its skin and can change color rapidly, dance around to the rhythm in a hypnotic swirl of color.