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. March 22, 2022 Add as ...
Why 'Anti-Rotation' is the New Core Standard: Trainer Secrets to a Stronger, Injury-Proof Midsection For decades, crunches and sit-ups were the undisputed champions of core training. Yet, modern ...
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