I talked to someone recently who had gone through HBOT.He explained that his legs "did not work because of nerve damage" secondary to Chemotherapy for bladder cancer and he was reliant on a wheelchair. He said he had 4 sessions of HBOT an hour at a time and he now walks unaided.

I also noted that top sportsmen ( premiership footballers and rugby players) use HBOT to speed recovery from injury.

I therefore invested in an Oxygen Concentrator and now if I watch a film on Netflix etc, I do so using one. Its not a hyperbaric chamber and the oxygen levels are only marginally increased. I don't know if it has made any difference. I don't know if it even works. But its quite pleasant to use and makes me feel I am doing something useful even during "Love Death and Robots"

I got it from Amazon.