Here’s How Likely You Are to Die Young

Pop quiz: What are the most important numbers to know when it comes to your risk of heart disease? You might say your blood pressure, or cholesterol, or weight—and all of those can be valuable clues. But according to researchers, there may be another figure that’s equally important: your so-called fitness number.

In a new study, this easy-to-do calculation was enough to accurately predict participants’ risk of premature death from cardiovascular diseases and other causes.