All in all the app itself is very good: well structured, with the possibility to track small personal victories and nice voice which is very important when you struggle your last seconds. But the exercises themselves! Your beginners level is for those beginners who used to be very fit and now want to get back to perfect form. And no customization for those who can't improve as quickly as you propose. In the end all I feel is irritation and dissatisfaction. So good bye.