Paul Saladino· MD
I've been convinced that of the value of hyperbaric oxygen therapy so I bought a hard shell chamber which goes up normally soft shell chambers are more readily accessible but they only go up to 1.3 atmospheres hard shells do up to 3 but beyond 1.75 he have to use pure oxygen which has a lot of costs and hearing risk to it and you can't bring your computer in air pure oxygen so I go to 1.75 with oxygen concentrators