I tried CKD once about a couple of months back. Lasted 2 weeks (lost a total 4% bf!) and gave up. it shows great progress but the lethargy by end week was horrible.

will probably try TKD instead when i am up for it....

CKD (cyclicle) would work very well for fat ppl. I am quite a small sized person and tried this for only 2 weeks only and lost like 4kg but lost a lot of mass and very little fat. Felt like my body was on starvation mode!

TKD (targeted) however is working wonders for me though... My weight stays the same but can see leaner and leaner