Philadelphia February 6, 2018 2:55 pm Cupid's Undie Run: A ‘Brief' Event People will strip down this weekend for Cupid’s Undie Run, which raises money to find a cure for Neurofibromatosis, a genetic disorder. US & World Videos 3:04 PurpleStride event in Philly raises money for those battling pancreatic cancer 3:27 ‘Take a Breather' and run to help battle against cystic fibrosis 1:49 How much time do you spend on your phone each week? Keith Jones, Erin Coleman talk screen time 2:52 Join the fight for ovarian cancer treatment and research at the Sandy Sprint 3:13 Movement, memory and Parkinson's awareness