I just did this premix and thought I would share how much I enjoyed it. Cathe does the weighted exercise, then the cardio (contrast) exercise, then she splices in an abs exercise from Bonus Abs 1 or Bonus Abs 2. LOVED it! You end up doing all of LIHI Legs PLUS all (or certainly most) of Bonus Abs 1 and 2. Plus I enjoyed the slight break that each ab segment provided.