 this competition within their own body wow totally opposite directions for the blood to flow well what do riders do to cool themselves down yeah so the first thing is they start training to acclimate for weeks before the race joao corey as a former pro cyclist who's now the agent for a few guys in this year's tour they'll do the rollers you know just put your bike on a set of rollers that are stationary and you ride that and they're in a hot environment then you go into a sauna afterwards