Probably unlikely bu: Any form of vigorous activity could in reality lead to disruption of the hymen. Most treadmill using isn't particularly vigorous so I wouldn't necessarily expect this to be a likely culprit.
Answered 10/24/2017
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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
5 doctors weighed in across 2 answers
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