A form of high intensity interval training, CrossFit is a strength and conditioning workout that is made up of functional movement performed at a high intensity level.
These movements are actions that you perform in your day-to-day life, like squatting, pulling, pushing etc. Many workouts feature variations of squats, push-ups, and weight lifting that last for predetermined amounts of time to help build muscles. This varies from a traditional workout that may tell you how many reps to do over any period of time.
CrossFit Journal notes that the workouts are so effective because of their emphasis on the elements of load, distance and speed, which help participants develop high levels of power. The workout may utilize different equipment to accomplish this, including kettle bells, rowers and bikes, medicine balls, speed ropes, rings and plyo boxes