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from sportsmedicine.about.com

Bicycle Crunches: One of the Best Ab Exercises

http://sportsmedicine.about.com/od/abdominalcorestrength1/qt/Bicycle_Crunch.htm

from the Guardian

Start here: four weeks to get fit

Bicycle crunch 1

from POPSUGAR Fitness

No Equipment Necessary: Bicycle Crunches

If you have the ever-popular office job that involves sitting at a desk for eight hours a day, it can wreak havoc on your body, creating tight hips and lower

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from POPSUGAR Fitness

The Lazy Girl's Guide to Getting Toned

Bicycle Crunches...everyone keeps talking about bicycle crunches and I coudn't figure out what they were...well now I know....

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