CrossFit is used to build strength and confidence on eight core areas: Cardio, Stamina, Strength, Flexibility, Power, Speed, Agility, Balance, Coordination, and Accuracy. If you have ever completed a CrossFit workout you will left a wrecked mess but so much happier. As of 2012 there were over 4,400 CrossFit gyms around the world. The reason the CrossFit works appeal to many is that most workouts are 20 minutes. Try a workout, you might just like it.