Dennis Frausto, of Rogers Park, runs in his underpants in 25-degree weather, part of the Cupid Undie-Run hosted by Sluggers World Class Sports Bar on Saturday. This fun run, followed by a costume contest, raises money for research to find a cure for neurofibromatosis, a genetic disorder that affects 1 in every 3,000 children born. . 📷: xavierortega18 for #jour282 #sprtcmn276 #sportsphotojournalism . #funrun #cupidrun #cupidrunchicago #cupid #run #runner #runners #runnersofinstagram #runnerslife #chicago #chicagosports #chicagorunning #chicagorunners #undierun #cupidsundierun #wrigleyville #findacure #neurofibromatosis #fundraiser #fundraiserevent #brrr #itscoldoutside #itscoldoutthere