Pfft, I've done that. Really activates the core.
Weightlifter Squats 220-Pounds While Balancing On Balance Board

This is a video of Russian weightlifter Ruslan Jaguar (awesome name, I’m stealing it) no-hand squatting 100kg (220-pounds) while balancing on a balance board. I think it goes without saying, but CrossFit has really gotten out of hand. Also, how do I know those are real weights and not just weight-shaped pieces of styrofoam? Or maybe he’s wearing a self-balancing exoskeleton under that bodysuit. Or maybe the whole video is just CGI. My point is this: I’m grasping at straws here trying to poke holes in the video after my girlfriend said how impressively fit this guy is.