"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." If you've completed a core workout—or 100 of them—over the years, you likely know what crunches are ...

If you're just starting a fitness routine and looking for a beginner abs workout, you may think sit-ups and crunches are necessary evils. But good news–you can skip 'em and still see results. This ...

While many workout regimens flame out as quickly as it took them to start trending, others stand the test of time. Exercises like tai chi, running, swimming, hiking and yoga, for instance, have been ...

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 ...

Building a strong core often starts with simple ab exercises, like crunches. These can be done anywhere, with no equipment, by people of all fitness levels! But even though crunches are ...