I have been loosing weight for 6 months and doing very well. I have lost 64 pounds so far. However, I have hit a big plateau. I have not lost any weight for 2 weeks. I had been steadily loosing 2-5 pounds per week. My eating has not changed, but I have been working out more. As a matter of fact 3 weeks ago I started going to our company fitness center every day Monday through Friday. I have been doing 30-45 minutes of cardio and 20-45 minutes of weightlifting everyday. On Saturday and Sunday I piddle around the house and yard but dont do any concious exercise. I dont feel bad...I am not hungry all of the time. Can I be over doing it?? I can see a lot of improvement in muscle tone everywhere (and I alternate muscle groups with a day of rest in between). I am getting down in the dumps because of the plateau. What can I do to get through it quicker? Am I building muscle AND loosing fat at the same time and therefore not loosing any weight as far as the scales are concerned? Help!