According to a new study published in the Journal of Medicine & Science in Sports and Exercise , physical activity is the top predictor of when you might die.

Researchers used wrist devices to track the activity of more than 3,600 Americans aged 50 to 80.

The results found older adults who did high intensity exercise during their ten most active hours have a lower mortality risk than those who are moderately active throughout the day.

Their conclusion is that physical activity measured by wearable devices is a better life span predictor than smoking, obesity, diabetes or heart disease.