Yes heat. http://articles.chicagotribune.com/2011-06-04/news/ct-met-half-marathon-heat-0605-20110604_1_long-distance-runner-chicago-half-marathon-spray-station

Yes heat. http://articles.chicagotribune.com/2011-06-04/news/ct-met-half-marathon-heat-0605-20110604_1_long-distance-runner-chicago-half-marathon-spray-stations http://articles.chicagotribune.com/2011-06-04/news/ct-met-ha... I'm just saying the whole "Push through the pain" adage is dangerous.