Finally got around to trying out a hyberbaric chamber - they had a $50 1st session deal, so, why not? 1.3 ATM for a little over half an hour at pressure - it was a bit tight in there, don't know how anyone manages to read a book - it was a "Respiro 270" soft sided chamber. Nothing wrong with me, aside from being a bit heavy and some muscle strain from working out a bit too much - rotator cuffs were cranky and I think the HBOT helped. Trying to figure out if I need to plonk down for my own chamber or if it makes the most sense to keep using theirs - next two sessions would run $65, but at much more than that, probably cheaper to order in.