For hundreds of years people have practiced the Chinese martial art of Tai Chi for its many health benefits. Researchers who study Tai Chi say it can help reduce blood pressure, decrease anxiety, improve flexibility and much more. For these reasons, some doctors at Mayo Clinic have embraced Tai Chi and are teaching it to their patients.
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Tai chi helps balance in people with Parkinson's: "It can't cure the disease. But it can slow down the progression" (http://goo.gl/r6Gx5).