Core Rhythms Latin Synergy is an excellent excercise video in that it is a change of pace than what you would normally do. Core Rhythms adds excitement during each phase of the video. You have options of viewing from the front of the video or the back of the video. You are also able to adjust the screen size to your liking. There are eight different dances wrapped into one exercise video. Each dance is explained into detail on how to do each step by Jaana Kuntz and Julia Powers, who are two world reknowned ballroom dancers. Core Rhythms helps build strength in your abdominals and your back, as...