Posted : January 2014
Author : Kelly Dunleavy O’Mara 
Use these tips to keep your outdoor winter workouts safe
As polar vortexes swept through the US and much of the Midwest found itself covered in snow, most people stayed indoors, figuring this must be too cold to run outside. In fact, though, research suggests that as long as it’s warmer than -18 degrees, it’s not too cold to work out — as long as you take the appropriate precautions.
“People, of course, have walked to the Poles,” said John Castellani, an exercise physiologist at the Army Research Institute of Environmental Medicine. Castellani was co-chair of a study conducted by the American College of Sports Medicine that found, “For the most part, cold-weather is not a barrier to performing physical activity.”
