Unlike summer camps, boot camps won't require you to put on a fundraising talent show to stop a nefarious computer company from turning Lake Cowabunga into its new industrial-waste depository. Team up to fight unfitness with today's Groupon: for $49, you get one month of unlimited access to boot-camp classes from Brooklyn Bad Ass Fitness (a $197 value).

Brooklyn Bad Ass Fitness helps adults lose weight fast through a workout system that combines team building with cardio and strength training in a month-long boot camp. With more than seven years of fitness experience, Brooklyn Bad Ass Fitness founder and certified personal trainer Bryan Ortiz is a professional motivator devoted to changing lives and toning muscles, and he has carefully curated his muscle-motivating team to whip participants in to shape. First-time boot campers can drop in on fat-eradicating classes and melt away excess body baggage faster than a wicked witch at a pool party. The intense outdoor boot-camp sessions will quickly unite uncooperative body cells, forming tight muscular bonds with little room in the friendship circle for flabby invaders. Classes meet at Prospect Park West and Ft. Greene Park Monday–Saturday, reserving Sundays for torrid rendezvous with French-language classes.