Feel Like the Strong Woman You Are With This Empowering Workout

"These are best done on an old tractor tire (laying on its side) if you have the luxury," said Chris. "This exercise falls into the category of what I call 'blue-collar conditioning,' and it is a great way to build strength, let out your aggression, and burn calories. To me, this kind of conditioning beats the treadmill any day."

Don't have a tire to hit with a sledgehammer? Do a woodchopper, which uses the same motion, but with a medicine ball (and no tire). If you're at a CrossFit gym or have access to a tire and hammer, Chris says, "Make sure you use your core when swinging the sledgehammer, as you would when swinging a baseball bat."

Here's how to do a standing wood chopper.