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 ...

I describe the core to my clients as the foundation of a house. You want the foundation to be strong so that you can add the walls and so on. If you don’t have a strong foundation (your core), the ...

Sit with your upper back resting against a sturdy chair. Place your feet flat on the floor, knees bent. Lift one leg off the ...

Calisthenics, or bodyweight training, is so much more than a last resort for when you're traveling, short on gear, or looking ...