World's Strangest Hangover Cures
What It Is: Scuba divers have been known to take a few onshore hits from their regulators to clear their heads. A similar breathing remedy is used around the world at walk-in oxygen bars, where the air is enriched with 95 percent oxygen (as opposed to the ordinary 21 percent).
Why It (Supposedly) Works: Proponents claim that extra oxygen improves the body’s overall metabolism, thus hastening the breakdown of alcohol-related toxins. Oxygen-enhanced air can also be infused with aromatherapeutic scents, like calming lavender or energizing mint (although adding these decreases the level of 02).