I have had 4 major back surgeries. After the last one a year and a half ago, I was still having problems standing straight up and walking long distances. My Dr wrote a prescription suggesting that I get a spa for water therapy. It took a while to get it because of the Covid-19 situation. It was installed last week and I am using it every day. I don’t know what the long term effects will be but I feel better each time I step into my spa. I am very impressed with the entire experience (except for the almost 4 month wait time) I absolutely love my HOT SPRING spa.