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 $35, you get two weeks of unlimited fitness sessions at Bootcamp Tulsa (an $89 value).

At Bootcamp Tulsa, the enemy is predictability. Each day, instructors throw down a fresh guerilla ambush worth of challenges for your muscles and brain, fueling constant gains and keeping you engaged. Over the course of each 45- to 60-minute session, you'll improve flexibility, strength, and endurance by running, jumping, lifting weights, slamming out push-ups and chin-ups, chasing chickens, and punching slabs of beef. The certified instructors will motivate you to set fitness goals and teach you to reach them by feeding off of the group's energy. Over the course of your camp, you'll sweat out weakness, fear, and monosodium glutamate while beginning to gain the functional, unsurpassed strength of a body in fluid, powerful motion.

Classes, which are separated by gender, are held at various locations and at various times throughout the day, so your unlimited two weeks let you choose if you want to start your day with an appetizer of health or cool down with a post-work dessert of sweet vigor. This summer’s sessions begin June 2, July 5, and August 2, and Bootcamp Tulsa asks that Groupon customers try to start their two weeks of classes as close to the beginning of the month as possible. Bring a water bottle and workout clothes to each session; weight-lifting gloves and a towel are optional.

New participants only.