"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 ...

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 ...

A simple yet powerful movement widely recommended by U.S. trainers to target the lower abs, improve core stability, and ...

Our core muscles are essential to everyday movement; we need them to walk, sit, and to lift and carry things. If you don’t do them right, you will likely feel tension in your neck, so be sure to use ...

This exercise only targets the abdominal muscles, so it’s not a functional core workout. Crunches can be hard on your back and neck, and may not be safe for everyone. Share on Pinterest The crunch is ...