Crossfit is a specialized core strength and conditioning program that is constantly varied in movements and based on functionality. It is designed to elicit as broad an adaptational response from your body as possible. Crossfit is a deliberate attempt to optimize physical competence in each of 10 recognized fitness domains: Cardiovascular and Respiratory, Endurance, Stamina, Strength, Flexibility, Power, Speed, Coordination, Agility, Balance, and Accuracy. Crossfit is designed so people of all levels and age groups can do this.