that's my dilemma too. i'm on my week 8th of Insanity. very intense workout routines and my heart rate monitor shows my calorie burn somewhere between 800-950 different days/ different workouts. my food is logged and monitored, calorie differential at least 3500/week and i still do not see much of a weight loss. i do look much smaller because of toning but not much weight loss. i just try not to let it discourage me but, its quiet annoying when i do think about it.
Never give up on a dream just because of the length of time it will take to achieve it. The time will pass anyway.
Starting weight: 153.8 pounds 16/04/2010
Goal weight: 125 pounds reached 29/09/2010
Current weight: too embarrassed to say