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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. Do you want a strong ...
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Forget crunches — a personal trainer recommends these 5 standing ab exercises to strengthen your core
A strong core is essential for any fitness pursuit. If you want to run a faster 5K, deadlift hundreds of pounds, or finally achieve a headstand in yoga class, your abs need to be trained and ...
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