If you are asking yourself why I said that is guarantted to lose 20 pounds in a month, using the tips in the video, the answer is really simple. No matter how old you are, if you consume the exact calories, if you exercise the exact same way and at the same intensity, you will defenitelly be losing 20 pounds in a month. My video http://www.youtube.com/watch?v=YIi46hh6id4 will explain you