This agonizing fitness test will have every muscle in your body begging you to quit.

But you're tougher than that, right?

Complete 50 reps of each exercise before moving onto the next, until you reach 500—yes, you heard that correctly—reps total. It may sound daunting at first, but remember: The key to getting through this challenge succesfully is all in your head.

Directions

Move through the circuit, one exercise at a time, at 50 reps per movement. Take no rest (or as little as possible) in between exercises.

Wyatt Krueger, a CrossFit Level-1 coach, owner of CrossFit Amherst, and expert contributor to Men's Fitness and HUMANFITPROJECT, demonstrates the moves.

This routine is part of our video feature on the 10 kickass CrossFit-inspired workout challenges to test your limits. Check out the whole series here.