Remember how much fun jump roping was when you were a kid? Here's a secret:...
Remember how much fun jump roping was when you were a kid?
Here's a secret: It's still fun. PLUS: It's an awesome metabolism-boosting exercise!
This high energy circuit, created by Ron Mathews, owner of Reebok|CrossFit Lab in Los Angeles, will burn about 200 cals in just 20 minutes: read more..
