Check out Womens Healths FitGIF Friday every week for fun and challenging new moves to make your sweat sesh really count. Heres this weeks 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.