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Vapor Thigh
RE: So doped records are bad - but records in spring loaded shoes are OK?
I've talk to a half dozen people who ran either Boston or London marathons this year in Vaporfly 4% shoes... All of then said the same thing. Their QUADS and/or Calves have NEVER hurt that much in their life after a marathon. Apparently some of that 'energy' is blasting right up their leg as well. 2 of them said they would never wear them again.

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