7 Reasons To Make It Intense

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#1 It Strengthens a MAJOR Muscle

That would be your heart. When you turn up the intensity on your workout, as high-intensity interval training does, you’re making your heart work harder, says Jordan Metzl, M.D., an exercise physician and author of The Exercise Cure. And since this muscle (like most) becomes stronger after putting it through tough training, this workout is very beneficial for your heart health. Plus, a study by the American Council on Exercise¬†found that Tabata workouts (high-intensity interval training that consists of eight intervals performed in four minutes) effectively boost cardiovascular strength.

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