I started working out about 5 months ago. Mostly cardio. I am down 40 lbs. I started lifting on a bowflex 6 weeks ago and now me weightless has actually slowed down. Could I be placing on muscle weight as fast as in losing fat? I still have actually about one more 20 pounds to go to hit my weight goal. I have actually adjusted my diet to up the protein intake since starting along with weights.