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What is zone 2 cardio, and how do I actually do it?
A healthy dose of cardio is an important part of your exercise routine, and for a lot of us, "zone 2" cardio is going to make up a big chunk of that. Low-intensity cardio—sometimes called LISS or ...
Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Here are all the ways ...
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