Instruct: Classify an Amazon review as either positive or negative.
Query: great follow-up to Solo Training

I loved Christensen's first book Solo Training and was not disappointed withthis one. He shows a lot of ways to make your techniques faster and stronger and how to use them in different situations.I especially liked how he showed how to pantomine grappling techniques. He would do part of a move in the air and then show the same part of the move on a real person. He would do it that way for three or four steps until his invisible opponent and his real opponent were on the ground. This was real helpful to me because I didn't know you can practice jujitsu by yourself.As always, Christensen gives you lots of stuff for your money. Over 300 pages with hundreds of training ideas.I liked his Solo Training DVD, too.