Medical experts are warning senior citizens, especially those with heart or lung problems, not to exercise too much early in the morning, Jiefang Daily reports.

And elderly fitness enthusiasts are being urged to carry personal data, including their home address, emergency contact numbers and a brief medical history with them whenever they go out alone.

At about 6 am on Tuesday, Pan, in his 80s, collapsed while doing his morning exercise, as a rule at the Longhua Martyrs' Cemetery.

Thanks to the timely rescue efforts of local police and medical workers, Pan recovered soon.

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