Fans of the deliciously soapy Bravo reality series Work Out may need to be reminded just how fine a personal trainer Jackie Warner is. This disc is that reminder, containing a fast-paced and comprehensive fitness routine that ranks among the very best. Warner is personable as she trains--and she doesn稚 stint on doing the moves herself. She's designed the workout in three chunks, upper body, lower body, and core/abs, which can be done separately or combined for a full hour heavy-duty routine. Because there's little rest between moves, the whole workout seems to fly by, but there's no denying its overall intensity. Warner combines tried-and-true moves (crunches, squats) with some new twists (just try to do that "butterfly" crunch and not feel it deeply the next day). And she's upbeat without being perky--though a viewer could be forgiven for grousing when Warner chirps "I could do these all day!" during Sumo squats. She also gives great attention to form, often working with one other trainer so it feels as though the viewer is getting a one-on-one session too. There are modifications for both beginning and advanced exercisers, so there's no excuse not to jump in. The hour will be over before you know it. -- A.T. Hurley