ScienceDaily (2007-11-06) — Relaxation in large, sound- and light-proof tanks with high-salt water — floating — is an effective way to alleviate long-term stress-related pain. Sleep was improved, patients felt more optimistic, and the content of the vitalizing hormone prolactin increased. Anxiety, stress, depression, and perception of pain declined. http://www.sciencedaily.com/releases/2007/11/071105120604.htm# Scientific research on the pain

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