12-03-2008, 10:36 AM
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Senior Member
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Join Date: Nov 2008
Location: Palo Alto, CA
Posts: 1,847
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I would stop doing that. Your joints can probably handle it now, but if you make a habit out of this you'll probably run into problems. If you can find a dirt or grass hill I would use that instead.
If you're only doing it once a week or so that's probably going to be okay, you just wouldn't want to do it everyday.
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