“When it comes to your fitness levels—or the amount of work your heart, lungs, and limbs can perform—there’s no doubt that a good, hard sweat is great for you. Vigorous exercise like running, swimming or playing tennis leads to greater improvements than easy or moderate workouts, like brisk walking, ballroom dancing and slow bike-riding.
But fitness and health, while closely related, are not always aligned. Research is now finding that you don’t have to put yourself through punishing workouts in order to optimize your health.
In a study last year, scientists from the U.S. and Europe found something surprising: the more moderate exercise people do, the more their cardiovascular health improves and their mortality risk drops. When it comes to vigorous exercise, smaller amounts seem to be linked with maximal health benefits…”