A fitness boot camp is a kind of physical training program conduct by gyms, personal trainers, and former military personnel. These programs have been increasing in popularity for more than a few years. The training frequently combines running, interval training, and many other exercise using weights and/or body weight to lose body fat, boost to cardiovascular efficiency, increase strength, and help people get into a practice of regular exercise. Many programs offer nourishment advice as well. Called "boot camp" because it trains groups of people, typically outdoors, and may or may not be similar to military basic training.