Two years ago I had an acute problem with my back. I'm sure it happened as I was walking on the golf course and slung my bag over my shoulders awkardly. The pain was excruciating, difficult to walk at times, forget lifting much. Couldn't play golf which I used to play several times a week. Went to the doctor several times - no relief.
This went on for several weeks.
My wife and I had planned a vacation at a Sandals resort that offered unlimited diving and golf, so the doctor prescribed me a bunch of pain killers for the trip. Got to our room in the late afternoon, terrible pain, but decided to give diving a try - it was already paid for.
Following the first dive, the pain in my back disappeared. I was skeptical that it was temporary, but over the next week, the pain never returned, and I cautiously did more and more over the week. Played golf 3 days, 3 additional days of diving. No problems walking or lifting.
It was clear to me that the simulated weightlessness of diving allowed something to realign and eliminate the pinched nerve or whatever the undiagnosed problem was.
I have been pain free since that time.
I'm sure that this type of neutral buoyancy therapy would be helpful to many - if you can get them in the water.