Our core muscles lie at the foundation of almost all movement we engage in. Whether we're getting out of bed in the morning or lugging groceries, a strong core can help maintain posture, balance, and ...

How many crunches can you do — and how does that stack up with others your age? That was the question posed by "FOX & Friends" on Monday, when fitness expert Joseph David challenged hosts Brian ...

Our core is made up of four muscle groups that are essential to everyday movements, like walking and lifting. And when people think about core strengthening, crunches are often the first thing that ...