CrossFit is a strength and conditioning program consisting mainly of a mix of aerobic exercise, gymnastics (body weight exercises), and Olympic weight lifting. CrossFit Inc. describes its strength and conditioning program as "constantly varied functional movements executed at high intensity across broad modal and time domains," with the stated goal of improving fitness.
Most classes are one hour and typically include a warm-up, a skill development segment, a strength development segment, and the high-intensity "workout of the day" (or WOD). Performance on each WOD is often scored and/or ranked to encourage competition and to track individual progress.
Equipment use for CrossFit includes the use of barbells, dumbbells, gymnastics rings, pull-up bars, jump ropes, kettlebells, medicine balls, plyo boxes, resistance bands, rowers, and various mats.
CrossFit is focused on "constantly varied, high-intensity, functional movement," drawing on categories and exercises such as these: calisthenics, Olympic style weightlifting, powerlifting, Strong-man type events, plyometrics, body weight exercises, indoor rowing, aerobic exercise, running, and swimming.