Ideal marathon conditions may not be what we believe according to this NYT article:
Most runners have heard the marathon lore: Your time will be best if the weather on race day is about 55 degrees and overcast, or even drizzly. And avoid dehydration at all costs, because it will cause your muscles to cramp and you could collapse at the finish line.
But none of that is true, researchers said at a recent marathon medicine and science conference in Chicago.
The weather theory “needs adjusting,” said Scott J. Montain, a research physiologist at the United States Army Research Institute of Environmental Medicine in Natick, Mass.
“Most of what we know comes from the lay literature,” he said.
Link.
