BEIJING, Oct. 9 -- Most families in Beijing love to gather in front of TV sets after dinner. But Gao Ning, wife of Huang Xiaoying, and his parents have better things to do. They clean the dishes, laze around a bit, change into track suits, put on their sports shoes and leave home.

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    The 32-year-old and his wife sweat it out on treadmills, go through the rigors of a group exercise session to tone their abs or do some stretching exercises under the guidance of personal trainers. And his parents join a group of retired people, most of them in their 60s, in a nearby community park to dance to the rhythms of traditional music. They use the intervals to chat with other members of the group, sharing their joys and pains.

    The Gaos represent a growing number of Beijing families that swear by exercise, especially because of the Beijing Olympics' public fitness drive. Gone are the days when many people considered physical labor as the only way of exercise. More and more middle-aged and elderly people have realized the importance of regular exercise.

    "Most of the people who join us for the group dancing sessions suffer from chronic diseases that need a certain amount of exercise as treatment," says Gao Ning's mother Gao Xiaohua, who suffers from allergic pneumonia. "It's a place for us to kill time, too."

    The senior Gaos prefer the public park to the gym because fitness clubs, which first appeared in the 1990s, are too extravagant for most of the elderly people.

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    "Paying 1,000 yuan (146 U.S. dollars) a year as club fees is a waste of money," says Gao Xiaohua. "Besides, we don't need that tough exercise routine." But the very concept of physical exercise has changed for many Chinese who have grown up during the past couple of decades when the country's economy grew by leaps and bounds.

    Gao Ning, a mid-level manager in a machinery company, says stress caused by work and the hours spent on Beijing's clogged roads forced him to join Hosa Gym, which has 28 branches in the capital's business district. "I feel relaxed and sort of reborn after a work-out," he says. "Without it my days are gloomy and I feel tired."

    Gao Ning and Huang Xiaoying make about 30,000 dollars a year, and pay 200 dollars each annually for their gym membership to get personal trainers for an hour a day.

    "It's money well spent," Huang says. "After you get all the necessities, money, job and a house, you realize how important health is. Without health, nothing is meaningful."