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 ...

Ask a physical therapist how you can subtly level up your workouts, and they’ll probably recommend trying the best BOSU balls (and other types of balance trainers). If you’re unfamiliar, BOSU stands ...