A month and a half before the Boston Marathon, runners training on the streets of Boston have to contend with frigid temperatures. Ed Harding's Report NewsCenter 5's Ed Harding reports that joggers should take precautions when running in cold weather. Dermatologist Dr. Jeffrey Dover said that exposure to freezing wind chills can severely damage the skin. The skin temperature drops.
Frost nip is the first thing that happens, which is sort of a little bit of frostbite.
You do it long enough, you lose circulation to the digits or to your skin, and you get frostbite. Dover recommended that runners start out into a headwind and come back into a tailwind. Joggers should also be sure to hydrate in summer or winter. Also, they need to protect the skin, using Vaseline or sun block. Runners recommend dressing in layers and wearing a windbreaker.