Just alternate lifting your knee as high as you can with good posture. This workout starts the same as Alpha Cardio. The burnout at the end of the video, will make sure that you have nothing left in the tank after 25 minutes. There are a bunch of moves from Insanity and Insanity Asylum, in the workout, so it is not easy by any stretch of the imagination. There are so many squats and so many planks, that your entire body will be sore after this one. For me this is the toughest workout in the Alpha series.
