 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 trying to acclimate for weeks before the race. Joao Correa is 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, which is put your bike on a set of rollers that are stationary and you ride that in either in a hot environment. Then you go into a sauna afterwards.