High Intensity Interval Training (HIIT) is now widely acknowledged to be the single most advantageous form of exercise for a wide range of fitness goals.
When compared side by side to other forms of cardiovascular training, HIIT repeatedly comes out on top. Not only that, but it does so in a fraction of the time when compared to continuous cardio training or steady state cardio. With HIIT, you will achieve superior gains over other forms of training in all the following areas:
-Weight loss
-Improving the body's capacity to burn fat
-Increasing the anaerobic threshold,...

The problem with most methods that claim to help you lose weight fast is that they can put your health in jeopardy. In the vast majority of instances they take a "too much - too soon" approach which instead guarantees long term failure for anybody who wants a healthy weight loss plan.
There are indeed strategies that can help you succeed at fast weight loss which also remain safe, effective and healthy. These weight loss or more to the point...fat loss methods are always the best methods to take. Under no circumstances should you ever need to embark upon a severe calorie restricted diet...