KNIGHT CLUB FITNESS: 21st Space Wing monthly fitness challenge Published May 30, 2017 By Senior Airman Rosemary Gudex 21st Space Wing Public Affairs PETERSON AIR FORCE BASE, Colo. -- The Knights of the 21st Space wing sometimes find themselves too busy to get away from their desks throughout the day, but who doesn’t love a good challenge? To get the blood flowing, take a few minutes throughout the day to step back and regain some focus. See who in your office sticks with this fitness challenge for the entire month!The Dirty Dozen Workout: Complete 12 reps of each exercise, increasing the amount of sets each week. Space them throughout your day as needed. Let’s do this!Week 1: 12 pushups, 12 squats, 12 sit ups, 12 lunges (2 sets)Week 2: 12 pushups, 12 squats, 12 sit ups, 12 lunges (4 sets)Week 3: 12 pushups, 12 squats, 12 sit ups, 12 lunges (6 sets)Week 4: 12 pushups, 12 squats, 12 sit ups, 12 lunges (8 sets)*Cut this section out of the paper and pin it up for your office to do for the month!