So, just run a mile or three to sober up (without the need for any device) .. seems pretty straightforward. Though you likely won't be running straight. :D
Seems really interesteling, I'll have to try it sometime. But does hyper ventilating really make you pass out after a couple minutes? I guess I've never tried, but it sounds counterintuitive.<p>I'm sure there was fun to be had doing this study!