CrossFit is a fitness program that challenges you to break out of your routine!

CrossFit workouts can be pretty brutal. They test the limits of your strength, speed, and endurance, with or without a group setting. Hear mixed opinions about CrossFit? It's worth it—but if you want to test yourself before you jump in feet-first, put yourself through these six ultra-demanding WODs—that's CrossFit-speak for "workout of the day."

And what workouts they are. These nasty routines run the gamut from extremely difficult to utterly vicious and borderline insane. As long as you're giving them your all, they'll leave you winded and sore like never before.

Enjoy!