To be successful with the sport of CrossFit, you need to have good endurance. This idea or formality of endurance spans across all modalities. You need to be able to have muscular endurance as it relates to gymnastics, barbell endurance as it relates to weightlifting, and aerobic capacity as it relates to the various monostructural movements/machines used within the sport. There is no way around it. You can be the strongest person in the sport, and the best gymnast out there, but if you cannot sustain reps over time, you will not make it. So, the question comes down to this: How does one build endurance within the sport of CrossFit?