That minimum 150 minutes a week of regular exercise you’ve been told you have to get to stay healthy and ward off disease? Even if you dip a bit below that, you won’t completely screw up your health, says a recent study from the University of Montreal. 

lt found that working out at a level of “low physical fitness”—about 20% below the average for healthy people, or about 30 minutes a week—still lowers your risk of developing heart disease. 

Though, honestly, we’d caution against taking this too much to heart (so to speak)—the more exercise, the better, it’s been proven—so why aim low?