Relaxation

hi,
I m 58 yrs old, had PD for last 10 years. I recently went away for a weekend and the cottage had a hot tub. Sat it in with the snow falling , drinking a glass of champs. The water jets were brilliant, 40 degrees, but more that anything i felt so relaxed,after being in it for 20 mins. Joints we more movable,
The reason I,m writing this topic has any once else got a a hot tub etc. and is it recognised as a treatment for PD.
i tried a spa bath last week and it was very beneficial - but i couldnt get out of it without undoing all the good.