what is?
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what is?
| Mon, 03-21-2005 - 4:49pm |
Hi I hear a lot about crunches??what are they and how many calories do you burn doing them?
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| Mon, 03-21-2005 - 6:00pm |
They are like sit ups, but they don't go all the way up. There are a number of different ways to do them depending on the muscle you want to work.
