Fitness and Weight Loss: This move will leave your quads quivering

It's simple, but far from easy.

Check out Women's Health's FitGIF Friday every week for fun and challenging new moves to make your sweat sesh really count. Here's this week's exercise:

Step up: This is so much more than a fantastic movie starring Channing and Jenna Dewan Tatum.

The step up builds strength in your quads and hamstrings while challenging your core's stabilizing muscles.

Trust us, you'll be feeling this tomorrow.

It's simple, but far from easy. Read Full Story