Cardio one of the key elements to your success, in this video blog Muhammed Qandil explains to you the different types of cardio, when to do them, and how to do it. Take the guess work out of it and be a student, by learning the applied work so you don't have to go through the trial and error period which will take up the most valuable asset called time. It will take a great amount of effort for you to implement it but the outcome will also be great!