I agree with this article. I'm no longer doing CNS and I'm now following IIFYM after reading Lyle McDonald's stuff. It definitely comes down to finding a 'diet' that each individual can maintain long-term. I feel so much better eating food that meets my macros and calories vs ULC and a weekly re-feed, but that's me. I just couldn't make any progress in the gym with such few carbs, now I have approx 150g every day (and on weekends if I'm out I don't even track at all but I do watch portion size) and now no longer hate life. I gave CNS a real shot – did it for just over a year – but I was too tired all the time, brain fog etc.But each to their own as the article says!