Hot stone therapy is a specialist massage that uses smooth, flat, heated basalt stones. Typically from river beds, basalt stones are used for massage as they have a rich iron content that retains heat. Cold marble stones are can also be used in the treatment to help aid with detoxing and healing the body but this will be discussed beforehand.

The combination of hot and cold stones encourages your body to detox and heal through increasing your lymphatic flow and encouraging your body to remove waste products. 

Some other benefits of hot stone massage include:

relaxing tense muscles
aiding pain relief
alleviating depression
promoting sleep
improving circulation

Hot stone therapy helps people who suffer from:

stress
back pain
muscular pain
fibromyalgia
insomnia
depression or anxiety
poor circulation