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. Cardio is good for us, ...
Women's Health has introduced a four-week dumbbell-based arm workout program led by trainer Kristina Earnest, focusing on progressive overload and varied exercise styles. Actress Hilary Duff has ...