Hyperbaric Oxygen Treatment (HBOT)
Most of the hard-shelled (and soft-shelled) chambers that I've seen at conferences and trade shows look like the chamber above, or worse, having only a small porthole to the outside world. If you're claustrophobic at all, you're not going to like the experience!
Oxygen is highly explosive and flammable. Due to the high-oxygen content within these chambers, no electronics are allowed inside. Unless you've got a good paperback book, or you can sleep or meditate through each of your entire 90-minute treatments, being sealed within a steel coffin for that long might be a challenge.
I'm extremely pleased that the place I've found for treatments offers completely clear chambers, that allow you to binge your new favorite Netflix series!
More details about this will follow!