1. Fast walking speed: Walking speed is linked to good cardiovascular health. A walking speed below 0.6m/s indicates slow walking, which may reduce longevity.
2. Strong grip strength: Grip strength peaks in individuals aged 20-30 and gradually declines with age.
3. Maintaining a slightly overweight status: Older adults with a slightly overweight status have better cold tolerance and disease resistance, and recover better after illness.
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