1.- Workout With Music From Your Device. 2.- Create Personalized Workout Sessions. 3.- Configure Which Songs Will Play During Which Workout Intensities. 4.- Find New Workout Sessions Created By The Community. 5.- High Configuration Options. 6.- And Much More. HIIT alternates between short but intense periods of exercise with recovery periods, being one of the most effective training to gain resistance and improve fat burning. Go to "Music" and select what songs from the memory of your device