I just about low carb diets on web m.d., I always was taught to do more cardio to lose weight when working out but here is a quote from the article,
Is ketosis dangerous, as some nutritional authorities would have you believe? Not at all, attest the authors. Ketones are the natural by-product of fat breakdown, normal and important sources of energy. To facilitate getting rid of these ketones, they urge you to increase your fluid intake by as much as 50%, to at least two quarts of water-based fluids a day.
As for exercise, the authors favor resistance-training, such as weight-lifting, because it stimulates the release of growth hormone more quickly than aerobic exercise. Why is this important? Because growth hormone shifts the metabolism to the preferential use of stored fat for energy.
Just food for thought!