Boot camps are a quick way to get in shape for upcoming marathons or adrenaline-pumping prison escapes. Jump the fence with today's Groupon: for $59, you get one month of unlimited fitness classes at Elk Grove Adventure Boot Camp (a $200 value). The classes are one hour in length and meet at 4:30 a.m., 5:30 a.m., and 6:45 a.m. Monday–Friday.

Elk Grove Adventure Boot Camp features a motivating workout regimen. Elijah Hrbek, certified fitness trainer and Army World-Class Athlete Program judo fighter, leads teams through a challenging routine that includes light running, obstacle courses, kettlebells, and other calorie-thwomping activities. He also provides nutritional counseling to fuel inertia-extinguishing bodies. The four-week program challenges students of every age and fitness level, gradually growing in intensity and leaving nobody behind. Participating in the accountability-enhancing group workouts can result in weight loss, improved self-confidence, and the ability to uproot mighty sequoias. For answers to frequently asked questions and a list of what to bring to camp, click here.