Has anybody tried Aquatic therapy?

Today my phsyio therapist suggested I try aqua therapy because the nerves/muscles in my legs are getting worse and I was wondering if anybody had tried this or anything like it? :)

I can't walk very well and apparently it's not very deep water so there wouldn't be any safety concerns or anything.

It costs for me to go though so it would be great if anybody has tried it to let me know if it helped you at all :)
Has anybody tried Aquatic therapy?
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