A Hot Tub is a large tub containing hot water and a number of
hydromassage jets, that provide a wonderful body massage.  
     
When you sit in the tub there are 3 elements which have a therapeutic and relaxing effect

Heat
The hot water increases
the body temperature, which has a beneficial effect on the circulation and muscle fibres

Massage
The hydrotherapy jets provide
an optimum mixture of hot water and air, relaxing the muscles and stimulating the production of endorphins, the bodys natural pain killers