Some very cold people will take to the streets of Chicago on Feb. 9, clad in nothing but their underwear and going for a run.
This particular run will not be for their health, though, but for the health of others. Cupid's Undie Run, now in its fourth year, benefits those afflicted with neurofibromatosis, a genetic disorder that causes nerve tissue throughout the body to grow tumors and can cause disabilities, chronic pain and cancer, among other things. All proceeds will go to the Children's Tumor Foundation to battle neurofibromatosis.



