Getting winded while running to catch the train? Ducking behind a crate of avocados when you see your spin class instructor at the supermarket? If you’ve been skipping workouts lately, you’re not alon…70 comments
It's been shown to improve cardiovascular health, burn more fat than a regular workout, and even boost metabolism by up to 450 percent in the 24 hours after you do it. It's high-intensity interval tra…103 comments
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