Question about Oprah's Boot Camp Training

In Oprah's new Boot Camp training, for 12 weeks if you read it closely you are supposed to weight train for 20 minutes 6 days a week. Is that safe?

And can you lose weight AND build muscle by weight training your body everyday as long as you don't do the same muscle groups?
I always thought the rule of thumb for weight training is 30 minutes if weights 3x a day. Or is everyday weight training one of those just "See how your body responds" type of things?

http://www2.oprah.com/presents/2005/bootcamp/moves/moves_basic.jhtml

Thanks!
 

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