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Title: Effective program, but use care
Review: I agree with the high ratings other reviewers have given to this program. It works, but you need to pay attention to your body and modify your form if things begin to hurt. I used it for about 2 1/2 years stopped due to repetitive injuries to my knees and elbows. After doing some online research, I found a number of medical articles and abstracts relating to use of weights during aerobic activity. Many of these found a connection between my types of injury and activity similar to heavy hands - especially walking and running with weights. I still use the calisthenics portions of his book, with modifications. I vary this with other types of exercise and I'm fairly injury free now.
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