Break a sweat, then you're done - that's how the 15-15-15 workout goes. At least that's what it feels like. This is the way to exercise for anyone who'd rather be doing anything else than a cardio workout.
Pulling on your workout leggings and heading to the gym, heading out on your bike or out for a run is the way to better health. Research shows us that having good cardiovascular fitness is more important than measuring BMI for longevity.
