Hi & welcome to the weight-loss.fitness forum. There are not many people on Cohen's but there is a separate sub-section of the forum for Cohenites & the link to it is Cohen's Lifestyle - Weight Loss Forum
I did Cohen's in 2007 & lost 36kgs in 28 weeks. I am currently 5kg above my lowest post-Cohen's weight & still follow the maintenance guidelines, albeit a bit vaguely. If I had stuck to them 100% I feel sure I would still be within 3kgs of my GW (as recommended by Dr Cohen). I'm getting there & Cohen's will always be my default . Cheers, Cate.