Many people new to fitness or experiencing prolonged absences wonder how often they should work out as beginners and what exercises to do. The reps and sets for each exercise, rest periods in between ...

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 ...