Calisthenics are strength and endurance-building exercises in which a person's body weight serves as the resistance. Another attribute of calisthentics is that they are typically completed systematically, as part of a regimen. Common calisthenic exercises include push-ups, sit-ups, jumping jacks, squats and twisting.
While people often complete these exercises on their own, calisthenics are also completed as part of a military or police training program or a physical education course. Systematic stretching of each part of the body is usually completed prior to engaging in vigorous activities. The goals of calisthenics are to improve overall body strength, fitness and endurance.