When you can't make it to the gym or don't have access to fitness equipment, you can still get in a heart-pumping, sweat-dripping, muscle-burning workout. Choose from one of these 51 workout videos ...
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What counts as cardio (and what doesn't)
Cardio is good for us. We need both cardio and strength training for basic health, as well as our athletic goals. But what actually counts as cardio? Can you count walking? Lifting weights? Anything ...
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