My Wife and I own a gym and have been doing more circuit training with our clients. Its a mix of weights body weight exercises ans cardio combined in an intese 50min workout. Here is my question, they are all getting in better shape. However there seems to be little bodyfat loss.
My Wife did one of our workouts with a heart rate monitor and was at a level 4 the whole time. She was in an anerobic phase the entire time. So no bodyfat was being used for energy? So do we just lower the intensity to lower level to burn fat?