"CrossFit itself is defined as that which optimizes fitness."
Complete as many rounds as possible in 45 minutes of:
Run 800 meters
Football does require a certain level of fitness, which we can all agree on, but the sport of football is much more than that. An 800 meter run is great to get a conditioning base set, but that distance is not realistic to football. The most I have my guys run is a 200. We all know the squat is one of the best exercises for developing speed and triple extension, but doing 80 bodyweight squats I don't think is the answer for football. Speed is developed by applying the most force through a full range of motion. There are better ways of achieving this, than by doing bodyweight squats. 8 muscle-ups do require a certain level of strength and athleticism, but does not have a good carry-over to the football field.
This workout only contains 3 exercises. In football we need to train so many different parts and movements. Solid football strength and conditioning programs/workouts will have 5-12 different exercises working on different components of football specific needs based on the team's needs. At FAST we will train many different movements to help the athlete get better at all of his weaknesses.
In short, do not seek the new fad workouts. Stick to the basics. Seek the advice of a Strength and Conditioning Specialist (CSCS). Trust me they are not doing CrossFit at the next level.