Instruct: Classify the given review into positive or negative sentiment.
Query: A workout for martial artists

As a martial artist for 5 years, I have high recommendations for this video. The key is to adjust it to your own capabilities. Some of the moves are VERY high impact (for example, the jumping front kick) and will wreck your knees or ankles if you do them repeatedly. In addition, some of the moves are so fast they don't allow you to focus on the muscles you're working out. As long as you take this video at your own pace, it's great!For self-defense, though, this video isn't worth much. If you're looking for martial arts skills, sign up for a martial arts class. If you like Tae Bo, you'll LOVE martial arts, and you'll learn self defense techniques to boot!