The programs lasted from 10 weeks to nine months, and the participants were followed for up to four years. Province said Tai Chi was the most beneficial of the exercises tried. Tai Chi, which involves slow, controlled movements that emphasize maintaining good balance, was used only at Emory University. It was designed for older people, and people who have heart or motion difficulties. It's had considerable success here in DC and is somewhat easier to learn.
Emphasis is on calm and balance.