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. Your workout routine ...
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Trainers say circuit training is the most efficient type of workout you can do (plus: 3 example workouts)
As a physical therapist and strength and conditioning specialist, I’m all about finding fitness solutions that work in real life. Circuit training is a powerhouse workout that’s not only efficient but ...
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