Want to Live Longer? Research Reveals the Top Cardiac Risk Factor (and It’s Not Smoking)

More importantly, making a small improvement can reduce your risk of premature death by 13 percent.

EXPERT OPINION BY JEFF HADEN @JEFF_HADEN

Illustration: Getty Images

Want to predict how long you’ll live? Knowing is impossible, but there are simple research-backed tests — tests you can do for free, at home — that provide indications.

You can do the sit-rise test.

You can try to stand on one leg for 10 seconds.

You can see how many pushups you can do.

You can hang from a bar (or squeeze a tennis........

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