Dumbbells aren’t necessary to forge ripped biceps, as evidenced by the muscles Sylvester Stallone formed while throwing refrigerators at his stove. Flex your might with this Groupon.
$21 for One Month of Unlimited Boot-Camp Sessions ($247 Value)
Boot-camp sessions combine metabolic resistance training with high-intensity cardio. Alternatively, clients can drop in on one of the weekend TRX classes, which use suspension cables in innovative exercises, or they can tackle the Spartan Race obstacle course. Each workout lasts 40 minutes and can be scaled to meet individual fitness levels.
Rock Star Boot Camp
Having three sons himself, fitness guru Curtis Hoekstra understands how finding time to exercise can sometimes be difficult when juggling busy work and family schedules. That’s one of the reasons why he designed Rock Star Boot Camp’s workouts to be fast—each only 40 minutes along. But his interval-based “9xFit” training system isn’t for slouches, packing a mix of strength training, plyometrics, core conditioning, and other types of exercise into one dynamic session. Over the course of the workout, boot camp attendees will warm up with some calisthenics before launching into exercises tailored to their individual needs. Cardio training also factors in, eschewing treadmills and other machines in favor of metabolism-boosting bodyweight circuits. The co-ed fitness classes are held in an indoor/outdoor warehouse.