Amazon.com
This 35-minute workout is ideal for coordinated exercisers in their teens and 20s who love to master MTV-style choreography.
Crunch: Cardio Groove teaches an intricate assortment of hip-hop funk moves in a dance-class style. "Remember, always keep the bounce!" says the jaunty instructor, in bare midriff and baggy pants. She and her noisy pack of vivacious exercisers demonstrate each pattern at half-speed several times first, then bring it up to tempo. The camera has an annoying habit of cutting off the feet when we need to see them, so you'll need to pause the video occasionally the first few times to figure out the moves. Once you get the choreography, this video is great fun, especially for youthful and well-coordinated dancers. Everyone is having a terrific time, and the energy is infectious. By the end, you've learned a complex pattern of hip choreography, burned calories, and done your exercise besides.
--Joan Price