So simple and effective! I have the Challenge Disc now for 2 days and would prefer to work every minute of it. Procedure: Simply insert the CD-ROM and install software, what you finally have time no 100Seiten instructions, all done in a few seconds Challenge Disc via USB infected and software start-up and let's go to the training :-) There are several ways: a test, which determines one's own ability and then you can make according to the result a warm-up and training. Optionally there are 5 levels available. And there are additional games (remember some of the good old arcade games), where you can then complete their training in a playful way! And that just makes lots of fun - suitable for the whole family. So what would Coordi (my new MFT coach) say on the plate - ready - go! I can only recommend it!