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Old 03-03-07 | 07:48 AM
  #8  
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RDW3261
Senior Member
 
Joined: Aug 2006
Posts: 234
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From: Illinois

Bikes: Trek 1000, Trek Pilot 5.2 and Trek 7100

I use mine to make sure I get a good work out. I try and do 30 to 60 minutes in the zone each ride. If I don't have one on I tend to day dream on rides. I use it to concentrate more.
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