I followed it pretty strictly last winter/early part of the summer. The reason I didn't stick with it is that for a college student, all that fruit gets a bit pricey. Plus, once I moved back to Florida for the summer it was so humid I could barely run for 20 minutes, so I kinda got lazy in that department. But I'll tell you, while I was on it I felt amazing. I started running almost every day after not excercising whatsoever for a long time, and within a month I was able to go for a 1.5 hour run no problem because of all the energy I had. No sore muscles or fatigue. I couldn't make myself sleep more than 6 hours per night, but it was good because I never felt tired. The price for the program is a little high, but I think it was worth it because you get a whole new outlook on diet and excercise. At least I did. I wish I had the $$ to stick with the diet the way I used to, although right now my diet is still pretty close to the Spartan diet. Just not quite as much fruit.
I'm kinda rambling. My point is it's a great program if you stick with it.
Finals are getting to my head. Time to sleep.