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. While plenty of ...

This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. “Right to the core,” “core values,” and “hardcore.” These little idioms highlight just how vital the concept of “core” is in our lives ...

Ready to fire up your core? Mira’s beginner Pilates workout hits abs, back, hips, and deep core muscles with tons of spine flexing, rolling, and side planking. CC BY Flow with Mira, Pilates Abs ...