If you missed your chance to wield a sword during high-intensity cardio workouts in a failed audition for the remake of Karate Kid (spoiler alert), today's Groupon gives you the secret weapon of warrior workout bliss: for $20, you get any five fitness classes at Boulder Quest Center (a $50 value). Choose one or mix and match any of BQC's fitness courses: cardio kickboxing, cardio sword, cardio boot camp, tribal bellydance, yoga, and NinjaFit.