If you’re looking to tone your core, the bicycle crunch is a good addition to your workout. It has the benefits of the standard crunch, but it engages additional core muscles — working your internal ...

According to a Pilates pro, the proper form for crunches doesn't involve crunching up with your hands behind your head because it can lead to neck pain. If someone tells you to drop down and knock out ...

Your core is like a WI-FI router. When it’s strong, everything in your body is connected and working seamlessly. But when ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

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 ...

"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 ...

Crunches are the ab exercise you need to add into your regular workout to improve your core strength, a fitness trainer suggests. Joseph David, a New York City based trainer, claims that core work is ...