Unanswerable: This question may need to be re-worded. What does it mean to you to 'cycle fast'? I would believe that any young male with good health should be able to learn to ride a bicycle and with experience can make those pedals sing with good strong effort. There is nothing in general to warn one away from this common physical activity.
Answered 7/12/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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