Need an intense, calorie-burning workout to jumpstart your summer fitness goals? Then a boot camp might be what you're looking for. You've probably seen advertisements for boot camps or watched people participate in them on reality shows, but what are they really all about? Fitness boot camps are physical training programs conducted by athletic trainers, gyms and military personnel - hence, the stereotypical drill instructor. Many take place outdoors in picturesque locations like the beach or parks. They typically last four to six weeks and track your progress from day one until the end. Workouts incorporate running, interval training and even old-school calisthenics like squat-thrusts, push-ups and jumping jacks. A single workout can burn up to 700 calories, so fat loss is a given.