I have been doing CAD for 2 weeks now and lost 3 lbs. I find it easy to do as long as you watch your RM and not overdo it and eat enough during your two CM's not to snack in between. I did Atkins for 7 months (losing 27 lbs) but towards the end was not feeling physically well, was bored with menu, had a hard time not cheating, etc.. My energy level is returning and I have begun to exercise again...so I know this is the plan for me.

Good luck!