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. A jump rope is a ...
If you think jumping rope is for “girls in their skirts, jumping on a playground,” Alysia Mattson suggests you reconsider. “It’s way more of a badass sport than that,” said the 28-year-old Seattle ...
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