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How long can you stand on one foot? The answer may predict your fall risk.

“If you can’t stand on your leg for five seconds, you’re at risk of falls,” said Kenton Kaufman, the senior author of the Mayo Clinic study.

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How long you can stand on one leg — specifically, your nondominant leg — is a telltale sign of age-related decline, according to a study led by researchers at Mayo Clinic.

Researchers found that a person’s ability to balance on one leg deteriorated with age faster than measurements of walking gait, grip and knee strength. Participants, ages 52 to 83, were compared with each other in a cross-sectional study.