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 ...

The benefit of these exercises for beginners in particular: They help you build strong, powerful, and injury-resistant ...

Core strength goes deeper than aesthetics — it’s essential for preventing back pain and injury and improving sports performance. This beginner ab workout will get you started. Nearly every movement ...

So maybe you aren’t in good enough shape to get down and give us 50 crunches. But we know you’re not looking to ignore your core either. Well here’s no small truth: A strong midsection isn’t all about ...

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 ...

Combat muscle loss with this 7-move routine.