Since Dawn has already given such a great breakdown to this workout, I will just give my feelings. This workout lives up to its title! Troy has you work really hard during the intervals, but unlike his other videos he gives you much more recovery. This is a killer workout (but in my opinion not as intense as spinervals 6.0 and 7.0). During the workout, my heartrate was high the entire time and my quads were really burning. This is another great Spinerval tape.

Trish